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Soil: What It Is and What It Does 1966 Aċċess Unlimited Ħieles

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.
Runtime: 10 minuti
Kwalità: HD
Rilaxx: Jan 01, 1966
Pajjiż: United States of America
Lingwa:
Kelma ewlenija : soil science soil