An illustrated key to the British freshwater ciliated protozoa commonly found in activated sludge /

Bibliographic Details
Main Author:	Curds, Colin Robert
Format:	Book
Language:	English
Published:	London : H.M.S.O., 1969.
Series:	Water pollution research technical paper ; no. 12.
Subjects:	Ciliata > Identification. Freshwater animals > Great Britain.

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