. (1977) Changes slow and suddenNew York : Denoyer-Geppert Audio-Visuals,MLA Citation
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Changes slow and sudden [filmstrip]
|Published:||New York : Denoyer-Geppert Audio-Visuals, c1977.|
Grassroots science, set 2
|Topics:||Science - Study and teaching (Elementary) - Juvenile films. | Growth - Juvenile films.|