Volume 70(9); September 1955 Articles Genetic basis of acquired drug resistance PMCID: PMC2024641 Variations in State immunization policies PMCID: PMC2024632 Health conditions among Navajo Indians PMCID: PMC2024638 Psychology of aging—Bethesda conference. Briefs of eight papers PMCID: PMC2024631 Major causes of illness and death PMCID: PMC2024637 Change in tuberculosis beds occupied: Spring 1954-fall 1954 PMCID: PMC2024640 The 1954 National Conference on Shellfish Sanitation PMCID: PMC2024644 Potential of an occupational health program in a State department of health PMCID: PMC2024647 Approaches to the quality of hospital care PMCID: PMC2024642 WHO, the catalyst in international health PMCID: PMC2024645 Accidents and poisonings in children PMCID: PMC2024639 Limitations of water treatment methods for removing radioactive contaminants PMCID: PMC2024633 Progress in reporting mental hospital statistics: Fifth annual conference of mental hospital statisticians, Bethesda. Md., May 25-26, 1955 PMCID: PMC2024630 Milk sanitation honor roll for 1953-55 PMCID: PMC2024643 Public Health Pioneering—A Southern Heritage Briefs from the APHA Southern Branch Conference PMCID: PMC2024636 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||