TY  - BOOK
AU  - Metcalfe, S. Darrel
AU  - Elkins, M. Donald
TI  - Crop Production Principles and Practices
SN  - 0000238710
U1  - 633 
PY  - 1972///
CY  - New York
PB  - Macmillan Publishing Co. Inc.
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Field crops
ER  -