Danger In The Fields
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✎ Suggest a correctionExplains the menace to potato crops of the Colorado beetle. Shows methods of control by chemicals, by the introduction of parasites and by breeding resistant strains.
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- 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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