TY  - BOOK
AU  - Roth, Lawrence O  .
AU  - Field,Harry L  .
TI  - Introduction to agricultural engineering / 
SN  - 0  412  06991  1
U1  - 630 
PY  - 1996///
CY  - New Delhi : 
PB  - C B S Publishers & Distributers , 
ER  -