TY  - BOOK
AU  - Gray, N.F.
TI  - Water Technology: An Introduction for Environmental Scientists and Engineers
PY  - 1999///
CY  - Great Britain
PB  - Arnold
UR  - http://books.google.com.pk/books/about/Water_Technology.html?id=p9e8r1b2UqwC&redir_esc=y
ER  -