TY  - BOOK
AU  - Birdie, G.S. 
AU  -  Birdie, J.S.
TI  - Water Supply and Sanitary Engineering: Including Enviromental Engineering
SN  - 9789384559151
U1  - BIR 
PY  - 2011///
CY  - New Delhi
PB  - Dhanpat Rai Publication Pvt. Ltd.
ER  -