Nitrogen Cycle
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Traces the nitrogen cycle showing nitrogen compounds as the key to the transfer of energy in nature. Points out man's responsibility to return nitrogen to the soil. A silent film.
Complete catalog record
THE NITROGEN CYCLE. 1938. 1 reel. Eastman Kodak Co., Teaching Films Division (S. Ralph Powers, author); 11Apr38; MP8500.
Related films
Sources
- 16mm Filmography (legacy record) — title, year, creator, format, sound, description
- 16mm Filmography editors — length, catalog record
Original permalink · Record added 2023-02-27 03:04:48