Title Work Title No: 22787 Medium: Moving Image Date: 1954 (Release) Original Summary: "Explorers find beautiful natural crystals in caves. The growth of stalactites, stalagmites is demonstrated. Crystals of commonplace are demonstrated. Organic chemicals are crystallized and studied under polarized light, producing exquisite patterns in all colors of the spectrum." - Summary from Worldcat. Countries of Origin: U.S.A. Genres: Educational
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