TY  - BOOK
AU  - Billings,Lloyd Clayton
ED  - Texas Water Works Short School.
TI  - Manual for sewage plant operators,
AV  - TD741 .T4
U1  - 628.3 
PY  - 1946///
CY  - Austin, Tex.
KW  - Sewage disposal
KW  - Sewage
KW  - Purification
N1  - Includes bibliographies
UR  - http://www.archive.org/details/manualforsewagep00texa
UR  - http://www.openlibrary.org/books/OL6523230M
ER  -