TY  - BOOK
ED  - Bulgarian National Committee on Earthquake Engineering
ED  - B¿Ưlgarska akademiiŁa na naukite
ED  - European Commission on Earthquake Engineering
ED  - European Symposium on Earthquake Engineering
TI  - Earthquake engineering: Proceedings of the Fourth European Symposium on Earthquake Engineering, Sofia-Bulgaria, September 5-7, 1972
U1  - 624 
PY  - 1973///.
CY  - Sofia: 
PB  - Bulgarian Academy of Sciences Press, 
KW  - Earthquake engineering
N1  - English, French, Russian, or Bulgarian; Organized by the European Commission on Earthquake Engineering and the Bulgarian National Committee on Earthquake Engineering; Includes bibliographical references
ER  -