TY  - GEN
AU  - Trivedy, R. K.
TI  - (An) Introduction to air pollution
SN  - 81-900553-3-X :
U1  - 574.5 
PY  - 1998///
CY  - Jaipur
PB  - Technoscience publications
KW  - ECOLOGY
N1  - Includes appendices, references and index
ER  -