Catalogue Number:  NFB521959
Producer:  National Film Board Of Canada
Producers:  Dorothy Courtois, Peter Katadotis
Directors:  Joan Henson
Producing Agencies:  National Film Board of Canada (Montreal), Office national du film du Canada (Montreal)
Subject:  Canadian Social Studies, Documentary, Environmental Studies, Science
Language:  English
Country Of Origin:  Canada
Copyright Year:  1980
Running Time:  1:30


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