TY  - BOOK
AU  - Pandey, Ravindra 
TI  - R. Gupta's popular master guide UGC NET/SLET: environmental science 
SN  - 9788178127224
U1  - 333.7 
PY  - 2009///
CY  - New Delhi 
PB  - Ramesh Publishing House 
KW  - Environmental sciences
ER  -