TY  - BOOK
AU  - Tyagi,Anil
TI  - UGC NET/SLET : environmental science
SN  - 8189301446
U1  - R333.700 76 
PY  - 2007///
CY  - New Delhi
PB  - Danika Publishing Co.
KW  - Environmental science-Competitive exams
N1  -      7a 4500
ER  -