TY  - GEN
AU  - Tyagi, Anil
AU  - Sing, Virendra
TI  - UGC NET/SET environment science
T2  - Trueman's specific series
SN  - 8189301446
PY  - 0000///New Delhi
CY  - 2011
PB  - Danika
KW  - Environmental science - UGC - NET/SET
KW  - Competition examination guide
ER  -