TY  - BOOK
AU  - Asthana,D.K.
AU  - Asthana, Meera
TI  - Environment : problems and solutions
SN  - 9788121916547
U1  - 363.7 
PY  - 2016///
CY  - New Delhi
PB  - S.Chand
KW  - Environmental Science
KW  - Nature effect of human beings
KW  - Environmental sciences
ER  -