Understanding Our Earth: Soil

Creator: Coronet

Format: 16mm

Sound: sound

Description: Shows soil profile--topsoil, subsoil, mantle rock and bed rock--with visual breakdown of the elements of soil--sand, decaying plant and animal matter, and clay. Discusses the types of soil in the U S and the importance of soil conservation.

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Original permalink · Record added: 2023-02-27 18:11:44