TY  - BOOK
AU  - Eckardt,Ottmar W.
TI  - Strength of materials: problem book and study guide 
SN  - 030773156
U1  - 620.112 
PY  - 1969///
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Strength of materials
ER  -