Subject categories
Documentary
Documentary → Documentary films - United States
Educational & Instructional
Educational & Instructional → Educational films
Food, Health, Lifestyle, Medicine, Psychology & Safety → Chronic diseases
Food, Health, Lifestyle, Medicine, Psychology & Safety → Health
Food, Health, Lifestyle, Medicine, Psychology & Safety → Health education
Food, Health, Lifestyle, Medicine, Psychology & Safety → Medicine - History
Food, Health, Lifestyle, Medicine, Psychology & Safety → Poliomyelitis - History - 20th century
Food, Health, Lifestyle, Medicine, Psychology & Safety → Poliomyelitis vaccine
Food, Health, Lifestyle, Medicine, Psychology & Safety → Salk vaccine
History → History
Mathematics, Science & Technology → Salk vaccine
Short films
Short films → Short films - United States