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Health services
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--subdivision Medical care under names of individual military services and under individual wars, classes of persons, ethnic groups, and occupational groups, e.g. United States. Air Force--Medical care; World War, 1939-1945--Medical care; Older people--Medical care; African Americans--Medical care; Construction industry--Employees--Medical care
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--subdivision Health and hygiene under ethnic groups and classes of persons; and subdivision Health aspects under topics and individual wars, e.g. Recreation areas--Health aspects; World War, 1939-1945--Health aspects
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