Disease Carriers: A Film Lesson In "Health And Hygiene"
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✎ Suggest a correctionAbout flies as carriers of disease, clean streets, sewage treatment, rat and rodent control, malaria mosquitoes.
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- 16mm Filmography (legacy record) — title, creator, format, sound, description, catalog record, video
Original permalink · Record added 2023-02-28 14:28:46 · Suggest a correction