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Soil: What It Is and What It Does (1966)
Bande annonce | HD | 10 minutes | soil science, soil
Explains that different kinds of soil are mixtures of sand, clay, and humus; tells how the weathering of rocks helps make soil; includes simple experiments to show the kind of soil in which different plants grow well.
Libération: Jan 01, 1966
Popularité: 0.064
Langue:
Studio: Coronet Instructional Films
Pays: United States of America
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