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  • × year_i:[1990 TO 2000}
  1. Medical Subject Headings : supplementary chemical records (1993) 9.91
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    Editor
    National Library of Medicine
  2. Medical Subject Headings : tree structures (1993) 9.91
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    Editor
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  3. National Library of Medicine Classification Schedule (1994) 9.91
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    Editor
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  4. Medical Subject Headings : annotated alphabetic list (1993) 9.91
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