TY  - BOOK
AU  - Hughes, William F  .
AU  - Gaylord ,Eber W  .
TI  - Basic equations of engineering science / 
T2  - Schamu`s outline series, 
SN  - 07-031109-9
U1  - 512.94 
PY  - 1964///
CY  - New York : 
PB  - McGraw Hill Book Company , 
ER  -