TY  - BOOK
AU  - Sheaffer, Craig C.
TI  - Introduction to agronomy:  food, crops, and environment
SN  - 978-1-11-131233-6
AV  - SB 91 .S48 2012 
PY  - 0000///Cengage Learning
CY  - New York
PB  -  Delmar
KW  - Food Crops
ER  -