TY  - GEN
AU  - Purohit , S.S.
AU  - Shammi , Q.J.
AU  - Agrawal , A.K.
TI  - A text book of environmental sciences : as per UGC unified syllabus
SN  - 8188826146
U1  - 577 
PY  - 2006///
CY  - India
PB  - Sarswati Purohit for Student Edition
KW  - ECOSYSTEM
KW  - ECOLOGY
KW  - ENVIRONMENTAL SCIENCE
KW  - FOREST RESOURCES
KW  - WATER RESOURCES
ER  -