Earth - Resources In Its Crust
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Describes earth's mineral resources: their formation, distribution, extraction, refining & uses. Divides earth's mineral resources into metallic minerals, non-metallic minerals & mineral fuels. Diagrams picture type of rock in which minerals are found & how each is extracted. Shows mineral fuel formation, along w/ varied uses of fuel by-products. Discusses search today for new sources of mineral fuels, radioactive elements & necessity for conservation of all mineral resources.
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- 16mm Filmography (legacy record) — title, format, sound, genre, description, catalog record
Original permalink · Record added 2023-02-27 16:54:24