Title Work Title No: 19809 Medium: Multimedia Date: c1961 (Copyright) Original Summary: Part of the "Biology program: animal life" series, this film "[e]xplains and illustrates the principle of adaptive radiation by showing how the typical molluscan characteristics are modified in each of the classes. Uses animated drawings and photomicrography to show how the general form of the mollusk has been adapted to many specialized and different ways of life in salt and fresh water and on land."--Summary from WorldCat Countries of Origin: U.S.A. Genres: Educational
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