Environmental change
Subtitle: focus on Ontario
By: D.E. Elrick.
Contributors: Guelph, Ontario. Université
Publisher: University of Guelph
Published: 1970
Place of publication: Guelph, Ont
Language: eng
Number of pages: 173
Subjects: Homme -- Influence du milieu -- Congrès.; Pollution -- Congrès.
Notes: Comprend des bibliographies.

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