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According activities adults American amount attitude attractive average baby bacteria bath become body butterfat camp cause cent child Child Labor church citizen clean cleanliness clothing cod liver oil colds common cold considered cost cubic centimeter death rate delinquency diphtheria diseases divorces granted economic effective electric Erewhon f cup fact factors feeble-minded girls happiness homemaker hospital household housewife important increased individual infant insanity interesting juvenile delinquency keep kitchen Labor leisure light living lunch Macmillan marriage married ment mental milk mind modern mother nursery school parents pasteurization person physical planning play playgrounds posture problems proper properly recreation result rickets scientific management score card social society standards task things tion tuberculosis typhoid fever United States Department vitamin washing wholesome woman women workers