TY  - BOOK
AU  - Gupta, U.S., ed.
TI  - Physiological aspects of crop nutrition and resistance
U1  - 581.1:631.41:633(082.2) L7 
PY  - 1977///
CY  - Delhi
PB  - Atma Ram
KW  - U.S. Gupta
KW  - Plant physiology,Field crops-cultivation,Soil testing
ER  -