TY  - GEN
AU  - Chitkara, M.G.
TI  - Encyclopaedia of ecology,environment and pollution: the air (prevention and control of pollution) act,1981 rules, 1982 notifications, ect
SN  - 8170248914
U1  - 577.2703 
PY  - 1998///
CY  - New Delhi
PB  - APH
KW  - Ecology
ER  -