TY  - BOOK
AU  - Srivastava, H. C. and others,
TI  - Crop Productivity
SN  - 812040257X
U1  - 633 
PY  - 1987///
CY  - New Delhi
PB  - Oxford & IBH Publishing Co. Pvt. Ltd.
KW  - Crop Productivity
KW  - Field & plantation crops
ER  -