TY  - BOOK
AU  - Gupta Om Prakash
AU  - Om Prakash Gupta
TI  - Elements of environmental pollution control
SN  - 9789382609667
U1  - 363.73 
PY  - 2016///
CY  - New Delhi
PB  - Khanna book publishing co. p ltd.
KW  - Pollutats
KW  - Constituents
KW  - Bio geochemical cycle
ER  -