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"This report was prepared to provide a basis for managing national parks in Canada so as to maintain grizzly bear populations and provide an acceptable degree of public safety"--Abstract, p. 7.
A study of canvasback (Aythya valisineria) breeding populations, nest success, productivity, and habitat requirements was conducted from 1961 to 1972 on a 181.3 square kilometer area south of Minnedosa, Manitoba.