TY  - GEN
AU  - Swarup, R
TI  - Encyclopaedia of ecology, environment & pollution control, Vol.17: environmental air and water analysis
SN  - 8170993776
U1  - 363.7003 
PY  - 1992///
CY  - New Delhi
PB  - Mittal
KW  - SOCIAL PROBLEMS
ER  -