TY  - BOOK
AU  - CHHATWAL, G. R
TI  - Environmental analysis : air water and soil
U1  - 363.706 4 E76 
PY  - 1989///
PB  - New Delhi
KW  - AIR -- POLLUTION -- ANALYSIS
KW  - ENVIRONMENTAL PROTECTION
KW  - SOILS -- TESTING
KW  - WATER -- POLLUTION -- ANALYSIS
ER  -