primer on fresh water.
Contributors: Canada. Environment Canada.
Edition: Rev. ed
Series: The environmental citizenship series; Freshwater series
Publisher: Environment Canada
Published: 1994
Place of publication: Ottawa, Ont
Language: eng
Number of pages: 73
Subjects: Water -- Canada.; Water quality -- Canada.; Water conservation -- Canada.; Water-supply -- Canada.
Notes: Issued also in French under title: Notations élémentaires sur l'eau douce.

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