TY  - BOOK
AU  - Roth,Lawrence O.
AU  - Field,Harry L.
TI  - An introduction to agricultural engineering : : a problem-solving a pproach / 
SN  -  0442006519
U1  - 630 
PY  - 1991///
CY  - New York : 
PB  - Van Nostrand Reinhold, 
KW  -  agricultural engineering
N1  -  "An Avi book.";  Includes index
ER  -