Freshwater pollution
By: [text, Caroline Wheal].
Contributors: United Nations Environment Programme.
Series: UNEP/GEMS environment library ;; no. 6
Publisher: UNEP
Published: 1991
Place of publication: Nairobi
Language: eng
Number of pages: 36
Subjects: Water -- Pollution.; Water-supply.
Other titles: Global freshwater quality.
Notes: Includes bibliographical references (p. 35-36).
Cover title.
"Based on Global freshwater quality (Blackwell, 1990) and other sources"--T.p. verso.