Environmental change
Subtitle: focus on Ontario
By: edited by D. E. Elrick ; [ill. by Sharron Deacon and Ute Bachinski].
Place of publication: Guelph [Ont.]
Number of pages: 173
Subjects: Conservation of natural resources -- Ontario; Pollution -- Ontario
Notes: Based on the lecture series Man and the quality of his envoronment presented at the University of Guelph, Winter, 1970 ... as part of the continuing education program of the Ontario Agricultural College.                                                     Includes bibliographical references.

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