TY  - BOOK
AU  - Singh, S S 
AU  - Rajesh Singh 
TI  - Principles and practices of agronomy
SN  - 9789327215694
U1  - 630 
PY  - 1988///
CY  - Ludhiana 
PB  - Kalyani publishers 
KW  - seed
KW  - Soil fertility
KW  - Crop planning
KW  - Water management of crops
ER  -