Overview
A study of the rare and beautiful trumpeter swan, which was nearly extinct but has now returned to a reasonably healthy population of about 2,000 through efforts of federal and provincial conservation agencies.
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8 - 1Canadian Wildlife: Retreat to the Rockies May 11, 1967 -
8 - 2Canadian Wildlife: A Celebration of Swans May 18, 1967
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8 - 3Canadian Wildlife: Arctic Summer May 25, 1967
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8 - 4Canadian Wildlife: Wild Alberta June 01, 1967