TY  - BOOK
AU  - Young,  Warren C. 
AU  - [Roark, Raymond J.].
TI  - Roark's formulas for stress & strain /  
SN  - 0070725411
PY  - 1989///
CY  - New York : 
PB  - McGraw-Hill, 
KW  - RESISTENCIA DE MATERIALES
ER  -