Soil Nutrients
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Discusses the needs of the soil in respect to nitrogen, potassium and phosphorus. Shows traditional and modern methods of application of these soil nutrients.
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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) — catalog record
Original permalink · Record added 2023-02-27 04:13:11