Discovery: Crystals: Jewels of Time
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Discusses the characteristics of crystals. Tells how they are formed and identified. Describes the shapes they assume. Shows such common crystal forms as quartz, feldspar, mica, obsidian, garnet, and others. (WGBH-TV) Kinescope.
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- 16mm Filmography (legacy record) — title, year, creator, format, description, catalog record
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