TY  - BOOK
AU  - Ryan,William
TI  - Water treatment and purification
SN  - 9788177540024
U1  - 628.16RYA 
PY  - 1937///
CY  - [S.l.]
PB  - McGraw Hill
KW  - Water Purification
KW  - Feed-water purification
UR  - http://www.amazon.com/exec/obidos/ASIN/B000RAY770/chopaconline-20
ER  -