Zeitschrift des Oesterreichischen Ingenieur- und Architekten-Vereins
Kurzformat
Zeitschrift des Oesterreichischen Ingenieur- und Architekten-Vereins / Wien , 1865-1957
: Ill. ; fol.
-
Basel, UB, UBH Tec Zs 10:44, Jg. 44 (1892)
-
Basel, UB, UBH Tec Zs 10:80, Jg. 80 (1928)
-
Basel, UB, UBH Tec Zs 10:90, Jg. 90 (1938)
-
Basel, UB, UBH Tec Zs 10:88/89, Jg. 88/89 (1936/37)
-
Basel, UB, UBH Tec Zs 10:77, Jg. 77 (1925)
-
Basel, UB, UBH Tec Zs 10:81, Jg. 81 (1929)
-
Basel, UB, UBH Tec Zs 10:82, Jg. 82 (1930)
-
Basel, UB, UBH Tec Zs 10:79, Jg. 79 (1927)
-
Basel, UB, UBH Tec Zs 10:70, Jg. 70 (1918)
-
Basel, UB, UBH Tec Zs 10:91/92, Jg. 91/92 (1946/47)
-
Basel, UB, UBH Tec Zs 10:87, Jg. 87 (1935)
-
Basel, UB, UBH Tec Zs 10:69, Jg. 69 (1917)
-
Basel, UB, UBH Tec Zs 10:60, Jg. 60 (1908)
-
Basel, UB, UBH Tec Zs 10:84, Jg. 84 (1932)
-
Basel, UB, UBH Tec Zs 10:83, Jg. 83 (1931)
-
Basel, UB, UBH Tec Zs 10:59, Jg. 59 (1907)
-
Basel, UB, UBH Tec Zs 10:78, Jg. 78 (1926)
-
Basel, UB, UBH Tec Zs 10:61, Jg. 61 (1909)
-
Basel, UB, UBH Tec Zs 10:58, Jg. 58 (1906)
-
Basel, UB, UBH Tec Zs 10 (Bei der Bestellung den gesuchten Band/Jahrgang als 'Anmerkung' erfassen)
-
Basel, UB, UBH Tec Zs 10:71, Jg. 71 (1919)
-
Basel, UB, UBH Tec Zs 10:56, Jg. 56 (1904)
-
Basel, UB, UBH Tec Zs 10:74, Jg. 74 (1922)
-
Basel, UB, UBH Tec Zs 10:57, Jg. 57 (1905)
-
Basel, UB, UBH Tec Zs 10:101/102, Jg. 101/102 (1956/57)
-
Basel, UB, UBH Tec Zs 10:86, Jg. 86 (1934)
-
Basel, UB, UBH Tec Zs 10:85, Jg. 85 (1933)
-
Basel, UB, UBH Tec Zs 10:62, Jg. 62 (1910)
-
Basel, UB, UBH Tec Zs 10:68, Jg. 68 (1916)
-
Basel, UB, UBH Tec Zs 10:67, Jg. 67 (1915)
-
Basel, UB, UBH Tec Zs 10:66, Jg. 66 (1914)
-
Basel, UB, UBH Tec Zs 10:65, Jg. 65 (1913)
-
Basel, UB, UBH Tec Zs 10:64, Jg. 64 (1912)
-
Basel, UB, UBH Tec Zs 10:63, Jg. 63 (1911)
-
Basel, UB, UBH Tec Zs 10:95/97, Jg. 95/97 (1950/52)
-
Basel, UB, UBH Tec Zs 10:75, Jg. 75 (1923)
-
Basel, UB, UBH Tec Zs 10:98/100, Jg. 98/100 (1953/55)
-
Basel, UB, UBH Tec Zs 10:93/94, Jg. 93/94 (1948/49)
-
Basel, UB, UBH Tec Zs 10:73, Jg. 73 (1921)
-
Basel, UB, UBH Tec Zs 10:76, Jg. 76 (1924)
-
Basel, UB, UBH Tec Zs 10:47, Jg. 47 (1895)
-
Basel, UB, UBH Tec Zs 10:46, Jg. 46 (1894)
-
Basel, UB, UBH Tec Zs 10:53, Jg. 53 (1901)
-
Basel, UB, UBH Tec Zs 10:52, Jg. 52 (1900)
-
Basel, UB, UBH Tec Zs 10:55, Jg. 55 (1903)
-
Basel, UB, UBH Tec Zs 10:54, Jg. 54 (1902)
| LEADER | 00000nas a2200000uc 4500 | ||
|---|---|---|---|
| 001 | 991066822159705501 | ||
| 005 | 20201231105330.0 | ||
| 008 | 201012d18651957au || p| 0 ||ger|d | ||
| 022 | |a 0372-9605 | ||
| 035 | |a (swissbib)235900222-41slsp_network | ||
| 035 | |a 235900222 |9 ExL | ||
| 035 | |a (NEBIS)000013283EBI01 | ||
| 035 | |a (IDSBB)000018384DSV01 | ||
| 035 | |a (IDSLU)000856134ILU01 | ||
| 035 | |a (EXLNZ-41SLSP_NETWORK)991066822159705501 | ||
| 035 | |a (41SLSP_UBS)99183840105504 |9 (41SLSP_UBS)99183840105504 | ||
| 040 | |a ETH-BIB |b ger |e ETHICS-ISBD |d CH-ZuSLS | ||
| 072 | 7 | |a te |2 SzZuIDS BS/BE | |
| 245 | 0 | 0 | |a Zeitschrift des Oesterreichischen Ingenieur- und Architekten-Vereins |
| 246 | 1 | |a Wochenschrift des Oesterreichischen Ingenieur- und Architekten-Vereins | |
| 246 | 1 | |a Zeitschrift des Oesterreichischen Ingenieur- und Architektenvereins | |
| 246 | 1 | |a Bau und Werk | |
| 246 | 1 | |i Hauptsachtitel teilweise |a Zeitschrift des Österreichischen Ingenieur- und Architekten-Vereines | |
| 264 | 1 | |a Wien |b Oesterreichischer Ingenieur- u. Architektenvereines |c 1865-1957 | |
| 300 | |b Ill. |c fol. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 362 | 0 | |a Jg. 17 (1865)-90 (1938) ; 91 (1946)-102 (1957) | |
| 500 | |a 1938, Aug.-Dez. Titel: Bau und Werk | ||
| 500 | |a Ab 1955: ... zugleich Organ des Oesterreichischen Automobiltechnischen Vereines | ||
| 500 | |a Architektenverein | ||
| 500 | |a 1939-1945 nichts erschienen | ||
| 505 | 0 | |a Ab 1876 beigebunden: Wochenschrift des Oesterr. Ingenieur- und Architekten-Vereins, Jg. 1 (1876) ff. | |
| 505 | 0 | 0 | |g Teilw. mit Beil. |t Jahresbericht des Österreichischen Ingenieur- und Architekten-Vereins |
| 650 | 7 | |a BAUWESEN (GEBAUTE UMWELT) |9 ger |0 (ETHUDK)000034946 |2 ethudk | |
| 655 | 7 | |a Zeitschrift |2 gnd-content | |
| 690 | |a Baugewerbe. Oesterreich. A. Zeitschrift |2 rzs-L1 | ||
| 690 | |a Architektur. Oesterreich. A. Zeitschrift |2 rzs-L1 | ||
| 690 | |a Bautechnik. Oesterreich. A. Zeitschrift |2 rzs-L1 | ||
| 690 | |a Ingenieurwesen. Oesterreich. A. Zeitschrift |2 rzs-L1 | ||
| 690 | |a Zeitschriften, Baugewerbe. Oesterreich |2 rzs-L1 | ||
| 690 | |a Zeitschriften, Architektur. Oesterreich |2 rzs-L1 | ||
| 690 | |a Zeitschriften, Baugtechnik. Oesterreich |2 rzs-L1 | ||
| 690 | |a Zeitschriften, Ingenieurwesen. Oesterreich |2 rzs-L1 | ||
| 710 | 2 | |a Oesterreichischer Automobiltechnischer Verein |0 (DE-588)1087525721 | |
| 710 | 2 | |a Österreichischer Ingenieur- und Architektenverein |0 (DE-588)9646-5 | |
| 780 | 0 | 0 | |t Zeitschrift des österreichischen Ingenieur-Vereins |w (IDSBB)000018381DSV01 |
| 780 | 0 | 0 | |t Zeitschrift des Oesterreichischen Ingenieur-Vereines |w (NEBIS)000013282EBI01 |
| 780 | 0 | 5 | |t Wochenschrift des Österreichischen Ingenieur- und Architekten-Vereines |w (IDSBB)004064640DSV01 |
| 785 | 0 | 0 | |t Österreichische Ingenieurzeitschrift : ÖIZ / Österreichischer Ingenieur- und Architekten-Verein |
| 852 | 4 | |b A100 |c MAG |j UBH Tec Zs 10 |9 (41SLSP_UBS)99183840105504 | |
| 852 | 4 | |b A100 |c 100FHZ |j UBH Tec Zs 10 |9 (41SLSP_UBS)99183840105504 | |
| 866 | |a Jg. 17(1865) - 71(1919) ; 73(1921) - 102(1957) |8 22241584300005504 | ||
| 900 | |a NEBISnoselfmerge | ||
| 949 | |c MAG |h UBH Tec Zs 10:44 |q Jg. 44 (1892) |p 11 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:80 |q Jg. 80 (1928) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:90 |q Jg. 90 (1938) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:88/89 |q Jg. 88/89 (1936/37) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:77 |q Jg. 77 (1925) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:81 |q Jg. 81 (1929) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:82 |q Jg. 82 (1930) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:79 |q Jg. 79 (1927) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:70 |q Jg. 70 (1918) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:91/92 |q Jg. 91/92 (1946/47) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:87 |q Jg. 87 (1935) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:69 |q Jg. 69 (1917) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:60 |q Jg. 60 (1908) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:84 |q Jg. 84 (1932) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:83 |q Jg. 83 (1931) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:59 |q Jg. 59 (1907) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:78 |q Jg. 78 (1926) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:61 |q Jg. 61 (1909) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:58 |q Jg. 58 (1906) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c MAG |z Bei der Bestellung den gesuchten Band/Jahrgang als 'Anmerkung' erfassen |p 11 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:71 |q Jg. 71 (1919) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:56 |q Jg. 56 (1904) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:74 |q Jg. 74 (1922) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:57 |q Jg. 57 (1905) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:101/102 |q Jg. 101/102 (1956/57) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:86 |q Jg. 86 (1934) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:85 |q Jg. 85 (1933) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:62 |q Jg. 62 (1910) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:68 |q Jg. 68 (1916) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:67 |q Jg. 67 (1915) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:66 |q Jg. 66 (1914) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:65 |q Jg. 65 (1913) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:64 |q Jg. 64 (1912) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:63 |q Jg. 63 (1911) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:95/97 |q Jg. 95/97 (1950/52) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:75 |q Jg. 75 (1923) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:98/100 |q Jg. 98/100 (1953/55) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:93/94 |q Jg. 93/94 (1948/49) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:73 |q Jg. 73 (1921) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:76 |q Jg. 76 (1924) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c MAG |h UBH Tec Zs 10:47 |q Jg. 47 (1895) |p 11 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c MAG |h UBH Tec Zs 10:46 |q Jg. 46 (1894) |p 11 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:53 |q Jg. 53 (1901) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:52 |q Jg. 52 (1900) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:55 |q Jg. 55 (1903) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 949 | |c 100FHZ |h UBH Tec Zs 10:54 |q Jg. 54 (1902) |p 01 |j UBH Tec Zs 10 |b A100 |9 (41SLSP_UBS)99183840105504 | ||
| 986 | |a (41SLSP_UBS)99183840105504 |9 (41SLSP_UBS)99183840105504 | ||
| 990 | |f wwzpk |9 LOCAL |9 (41SLSP_UBS)99183840105504 | ||
Basisinformationen
Signatur:
-
Basel, UB, UBH Tec Zs 10:44, Jg. 44 (1892)
-
Basel, UB, UBH Tec Zs 10:80, Jg. 80 (1928)
-
Basel, UB, UBH Tec Zs 10:90, Jg. 90 (1938)
-
Basel, UB, UBH Tec Zs 10:88/89, Jg. 88/89 (1936/37)
-
Basel, UB, UBH Tec Zs 10:77, Jg. 77 (1925)
-
Basel, UB, UBH Tec Zs 10:81, Jg. 81 (1929)
-
Basel, UB, UBH Tec Zs 10:82, Jg. 82 (1930)
-
Basel, UB, UBH Tec Zs 10:79, Jg. 79 (1927)
-
Basel, UB, UBH Tec Zs 10:70, Jg. 70 (1918)
-
Basel, UB, UBH Tec Zs 10:91/92, Jg. 91/92 (1946/47)
-
Basel, UB, UBH Tec Zs 10:87, Jg. 87 (1935)
-
Basel, UB, UBH Tec Zs 10:69, Jg. 69 (1917)
-
Basel, UB, UBH Tec Zs 10:60, Jg. 60 (1908)
-
Basel, UB, UBH Tec Zs 10:84, Jg. 84 (1932)
-
Basel, UB, UBH Tec Zs 10:83, Jg. 83 (1931)
-
Basel, UB, UBH Tec Zs 10:59, Jg. 59 (1907)
-
Basel, UB, UBH Tec Zs 10:78, Jg. 78 (1926)
-
Basel, UB, UBH Tec Zs 10:61, Jg. 61 (1909)
-
Basel, UB, UBH Tec Zs 10:58, Jg. 58 (1906)
-
Basel, UB, UBH Tec Zs 10 (Bei der Bestellung den gesuchten Band/Jahrgang als 'Anmerkung' erfassen)
-
Basel, UB, UBH Tec Zs 10:71, Jg. 71 (1919)
-
Basel, UB, UBH Tec Zs 10:56, Jg. 56 (1904)
-
Basel, UB, UBH Tec Zs 10:74, Jg. 74 (1922)
-
Basel, UB, UBH Tec Zs 10:57, Jg. 57 (1905)
-
Basel, UB, UBH Tec Zs 10:101/102, Jg. 101/102 (1956/57)
-
Basel, UB, UBH Tec Zs 10:86, Jg. 86 (1934)
-
Basel, UB, UBH Tec Zs 10:85, Jg. 85 (1933)
-
Basel, UB, UBH Tec Zs 10:62, Jg. 62 (1910)
-
Basel, UB, UBH Tec Zs 10:68, Jg. 68 (1916)
-
Basel, UB, UBH Tec Zs 10:67, Jg. 67 (1915)
-
Basel, UB, UBH Tec Zs 10:66, Jg. 66 (1914)
-
Basel, UB, UBH Tec Zs 10:65, Jg. 65 (1913)
-
Basel, UB, UBH Tec Zs 10:64, Jg. 64 (1912)
-
Basel, UB, UBH Tec Zs 10:63, Jg. 63 (1911)
-
Basel, UB, UBH Tec Zs 10:95/97, Jg. 95/97 (1950/52)
-
Basel, UB, UBH Tec Zs 10:75, Jg. 75 (1923)
-
Basel, UB, UBH Tec Zs 10:98/100, Jg. 98/100 (1953/55)
-
Basel, UB, UBH Tec Zs 10:93/94, Jg. 93/94 (1948/49)
-
Basel, UB, UBH Tec Zs 10:73, Jg. 73 (1921)
-
Basel, UB, UBH Tec Zs 10:76, Jg. 76 (1924)
-
Basel, UB, UBH Tec Zs 10:47, Jg. 47 (1895)
-
Basel, UB, UBH Tec Zs 10:46, Jg. 46 (1894)
-
Basel, UB, UBH Tec Zs 10:53, Jg. 53 (1901)
-
Basel, UB, UBH Tec Zs 10:52, Jg. 52 (1900)
-
Basel, UB, UBH Tec Zs 10:55, Jg. 55 (1903)
-
Basel, UB, UBH Tec Zs 10:54, Jg. 54 (1902)
Ressourcentyp:
Periodikum
Titel:
Zeitschrift des Oesterreichischen Ingenieur- und Architekten-Vereins
Erscheinungsangaben:
Wien, Oesterreichischer Ingenieur- u. Architektenvereines, 1865-1957
Physische Beschreibung:
-
Ill.; fol.
Inhalt und innere Ordnung
Inhalt:
-
Teilw. mit Beil. / Jahresbericht des Österreichischen Ingenieur- und Architekten-Vereins
Anmerkungen
Allgemeine Anmerkung:
1938, Aug.-Dez. Titel: Bau und Werk
Ab 1955: ... zugleich Organ des Oesterreichischen Automobiltechnischen Vereines
Architektenverein
1939-1945 nichts erschienen
Sprache, Schrift:
Deutsch
Identifikatoren
Systemnummer:
991066822159705501
Andere Systemnummer:
-
(swissbib)235900222-41slsp_network
-
235900222
-
(NEBIS)000013283EBI01
-
(IDSBB)000018384DSV01
-
(IDSLU)000856134ILU01
-
(EXLNZ-41SLSP_NETWORK)991066822159705501
-
(41SLSP_UBS)99183840105504