TY  - BOOK
AU  - Langworthy,V.W.
TI  - Water treatment plant operation
SN  - 0250405032
PY  - 1981///
CY  - Ann Arbor, Mich.
PB  - Ann Arbor Science Publishers
KW  - Water treatment plants
KW  - Water
KW  - Purification
N1  - v.1. Review manual for operators - v.2. Mathematics for operators - v.3. Hydraulics for operators - v.4. Chemistry for operators; Includes indexes
ER  -