TY  - BOOK
AU  - Dhaliwal. G. S. & Kukal. S. S.
TI  - ESSENTIALS OF ENVIRONMENTAL SCIENCE
SN  - 0
U1  - 301.31 
PB  - Kalyani Pub, N. Delhi
KW  - INFLUENCE AND EFFECT OF ENVIRONMENT ON HUMAN GROUPS
KW  - Environmentalism
ER  -