(1961). Research in gerontology: Biological and medical. U.S.Department of Health,Education,and Welfare.
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Chicago-čujuhus (17. p.)
Research in Gerontology: Biological and Medical. Washington: U.S.Department of Health,Education,and Welfare, 1961.
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MLA-čujuhus (9. p.)
Research in Gerontology: Biological and Medical. U.S.Department of Health,Education,and Welfare, 1961.
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