TY  - BOOK
AU  - Singh R. P.
ED  - International Symposium On Natural Resoruces Management For A sustainable Agriculture (1st : 1990 : New Delhi)
TI  - Proaceedings :  Sustainable agriculture 
U1  - "X9(J).192,N9, N0.1" 
PY  - 1997///
CY  - Delhi
PB  - Indian Society of Agronomy India   
KW  - Industry
ER  -