TY  - BOOK
AU  - Walia, S  .
AU  - Parmar,B S  .
TI  - Pesticides,crop protection and environment / 
SN  - 81  204  1019  X
U1  - 632.95 
PY  - 1995///
CY  - New Delhi : 
PB  - Oxford & IBH Publishing company , 
N1  - **Reference
ER  -