TY  - BOOK
AU  - Singh,Raj Kumar
TI  - Environmental studies
SN  - 9780071072656 (paperback)
PY  - 2012///], ©2012
CY  - New Delhi, India
PB  - Tata McGraw Hill Education
KW  - Environmental sciences
KW  - Human ecology
KW  - Pollution
N1  - Includes index
ER  -