16mm Filmography
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Understanding Our Earth - Soil

Explains the soil profile, which consists of topsoil, subsoil, mantle rock and bedrock. Presents a breakdown of the elements of soil and describes the process of soil making, whereby rocks are broken down by erosion and decaying matter changes into humus. Covers the types of soil throughout the United States and the importance of conservation. , L: Limited Access CP: Composite Positive AC: Acetate A: 400' 16/8/9.5mm 16mm Color Sound 406
Complete catalog record
Explains the soil profile, which consists of topsoil, subsoil, mantle rock and bedrock. Presents a breakdown of the elements of soil and describes the process of soil making, whereby rocks are broken down by erosion and decaying matter changes into humus. Covers the types of soil throughout the United States and the importance of conservation. NOTE: Two (or more) records have been merged together to create this data.

More in Understanding Our Earth Series

  1. Understanding Our Earth: Soil 1953
  2. Understanding Our Earth: How Its Surface Changes. 1956
  3. Understanding our Earth : Rocks and Minerals 1957
  4. Understanding Our Earth - Glaciers 1977
  5. Understanding Our Earth - Rocks And Minerals 1977
  6. Understanding Our Earth - Soil 1977

Related films

Sources

  1. A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, description
  2. 16mm Filmography (legacy record) — creator, length, color, sound, description, catalog record

Original permalink · Record added 2023-02-27 06:06:59