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Perspectives in Science

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A package that combines Perspectives in Sciences 1 and Perspectives in Sciences 2, in one complete resource for science-related studies, grades 7 to 10. Contains: Toxic Waste (59 min. 58 sec.); Water (58 min. 34 sec.); Biotechnology (59 min. 57 sec.); Program in Action (21 min. 21 sec.); Forestry (59 min. 01 sec.); Soil (59 min. 43 sec.) and Air (50 min. 25 sec.).

1997, 368 min 52 s

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