Our Soil Resources - Formation And Conservation
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Explains how soil is formed by the physical and chemical disintegration of rock and by chemical decomposition of plant and animal matter. Shows the world's four soil groups. , L: Limited Access CP: Composite Positive AC: Acetate A: 400' 16/8/9.5mm 16mm Black & White Sound Encyclopaedia Britannica Educational Corporation. Films & Video.
Complete catalog record
Explains how soil is formed by the physical and chemical disintegration of rock and by chemical decomposition of plant and animal matter. Shows the world's four soil groups. NOTE: Two (or more) records have been merged together to create this data.
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Sources
- 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, sound, description
- 16mm Filmography (legacy record) — length, description, catalog record
Original permalink · Record added 2023-02-27 03:09:26