TY  - BOOK
AU  - Birdie, G.S. 
AU  -  Birdie, J.S.
TI  - Water supply and sanitary engineering 
SN  - 81-87433.31-0
U1  - 628 
PY  - 2008///
CY  - Vidhyanagar
PB  - Dhanpat Rai
ER  -