TY  - BOOK
AU  - Vir Singh
AU  - Vir Singh/Papnai, Gaurav/Negi, Vrinda/
TI  - Environment, agriculture and sustainable development
SN  - 9789383158171
U1  - 338.10954  V816E 
PY  - 2014///
CY  - New Delhi
PB  - S.K. book agency
ER  -