TY  - BOOK
AU  - Asthana D.K.
TI  - Environment: problems and solutions
SN  - 8121916542
AV  - GE 70 .A8 1998
PY  - 1998///
CY  - New Delhi
PB  - S.Chand
KW  - Environment
N1  - Inc.bibliography,index
ER  -