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12. But flu is tougher

18. The Commonwealth of Science

20. County health officer's manual

26. Doctors and medical students under the selective service: hearings before the Committee on Military Affairs, United States Senate, Seventy-seventh Congress, first session, on S. 783 : a bill to amend the Selective Training and Service Act of 1940 : March 18, 19, 20, 1941

27. Drugs resources: manufacturers, importers, processors : biologicals, botanicals, containers, fish liver oils, narcotics, hormones and glandular substances, medicinal chemicals, surgical dressings

28. The etiology of child behavior difficulties, juvenile delinquency, and adult criminality, with special reference to their occurrence in twins

32. Excerpts from "Benjamin Franklin's Experiments"

33. Field service regulations: operations