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1BokPublicerad 1998“…National Center for Health Statistics (U.S.)…”
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2BokPublicerad 1968“…National Center for Health Statistics (U.S.)…”
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3BokPublicerad 1993“…National Center for Health Statistics (U.S.)…”
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4Regeringsdokument BokPublicerad 1981“…National Center for Health Statistics (U.S.)…”
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5
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6Bokav Heuser, Robert L.“…National Center for Health Statistics (U.S.). Division of Vital Statistics…”
Publicerad 1976
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7Regeringsdokument Periodisk publikationPublicerad 1976“…National Center for Health Statistics (U.S.)…”
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8BokPublicerad 1984“…National Center for Health Statistics (U.S.)…”
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9Periodisk publikationPublicerad 1962“…National Center for Health Statistics (U.S.)…”