TY  - BOOK
AU  - Chawla, Shashi
TI  - A textbook of environmental studies
SN  - 9781259006388
U1  - 333.7 CHA 
PY  - 2012///
CY  - New Delhi
PB  - McGraw Hill Education (India) Private Limited
KW  - Environmental sciences - Textbooks ; Human ecology - Textbooks ; NATURE - Natural Resources
N1  - Includes index (I.1 - I.8)
ER  -