An illustrated key to the British freshwater ciliated protozoa commonlyfound in activated sludge
By: by C. R. Curds.
Contributors: Great Britain. Ministry of Technology.; Water Pollution Research Laboratory.
Series: Technical papers / Water Pollution Research Laboratory -- no.12
Publisher: H.M.S.O; H.M.S.O.
Published: 1969
Place of publication: London
Language: eng
Number of pages: 90
Subjects: Sewage -- Purification -- Biological treatment.; Ciliata.
Notes: At head of title: Ministry of Technology.

bibl p87-88.