Moving Unseen Energy
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Shows farmers the use of anhydrous ammonia and how it is delivered by pipeline. A university professor also explains the function of nitrogen in plant growth.
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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
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