TY  - BOOK
AU  - Tyagi, O.D.
AU  - Mehra, M.
TI  - Textbook of environmental chemistry
SN  - 81-7041-352-4
U1  - 577.4:51 
PY  - 1990///
CY  - New Delhi
PB  - Anmol Publications
KW  - Environmental chemistry
ER  -