Nature's food chain [videorecording]
By: Producers: Bernard Devlin, Andre Petrowski, Roman Kroitor.
Contributors: National Film Board of Canada.
Publisher: National FIlm Board of Canada
Published: 1977
Place of publication: Montreal
Number of pages: 14
Subjects: Animals -- Food.; Biological productivity.; Ecology.; Food chains (Ecology)
Notes: FOR CLASSROOM USE ONLY.

VHS.

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