TY  - BOOK
AU  - ASTHANA,D.K.
AU  - ASTHANA,MEERA
TI  - Environment: problems and solutions
SN  - 8121916542
U1  - ENV 301.31 
PY  - 1999///
CY  - New Delhi
PB  - S.Chand 
KW  - ENVIRONMENTAL SCIENCES
N1  - For the students of B.Sc(Pass & Honours)courses of various Indian universities
ER  -