The Unwelcome Guest
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✎ Suggest a correctionShows how comprehensive prevention and treatment programs for helminth diseases can improve the quality of life in many nations. Discusses the commitment of Pfizer International to do research in the field of parasitic diseases.
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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
- Ideal Pictures Corporation Motion Picture Catalog, 1940-1941 — title, length, format, sound, genre, description
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