TY  - BOOK
AU  - Birdie,G.S.
AU  - Birdie, J. S.
TI  - Water supply and sanitary engineering: (including environmental engineering, water and air pollution laws and ecology) 
SN  - [   ]
PY  - 1992///
CY  - Nai Sarak, Delhi
PB  - Dhanpak rai & Sons
KW  - Sanitary engineering
KW  - Water
KW  - Supply
N1  - [pages 1-4 missing.]
ER  -