TY  - GEN
AU  - Purohit,S.S.
AU  - Shammi, Q.J.
AU  - Agarwal, A.K.
TI  - A Text book of Environmental Science
SN  - 9788188826148
U1  - 333.7 
PY  - 2012///
CY  - Jodhpur
PB  - Student Edition
KW  - Environmental  Science
ER  -