TY  - BOOK
AU  - Singh, B.B.
AU  - 
TI  - R.Gupta's UGC NET/SET Environment Sciences: paper ll & lll
SN  - 9788178127224
U1  - 333.7 
PY  - 2014///
CY  - New Delhi
PB  - Ramesh Publishing House
N1  - It inlclude index
ER  -