TY  - BOOK
AU  -  Clough, Ray W 
TI  - Dynamics of structures / Ray W. Clough, Joseph Penzien.- 2nd ed
SN  - 0071132414
U1  - 624.171 CLO 
CY  - New York : Mcgraw-Hill, C1993.
KW  - Soils mechanics
ER  -