TY  - GEN
AU  - Acquaah, George
TI  - Principles of crop production: theory, techniques, and technology
SN  - 0131145568
U1  - 631 
PY  - 2001///
CY  - New Jersey
PB  - Pearson Education
KW  - Crop yields
KW  - Food crops
KW  - Field crops
ER  -