TY  - BOOK
AU  - Rao, M.N.
AU  - Rao, H.V.N.
TI  - Air polution
U1  - 574.5 
PY  - 1989///
CY  - New Delhi
PB  - Tta McGraw Hill publishing
KW  - Environmental Science
KW  - Air--Pollution--Law and legislation
N1  - Includes  index
ER  -