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UOM:39015074107643

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National Library of Medicine (U.S.)

MINN:31951M013754299

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National Academy of Sciences (U.S.)

SRLF:A0002830602

Science

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9780309484244 / 0309484243

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National Science Foundation (U.S.)

MINN:30000011054222

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National Academy of Sciences (U.S.)

NAP:16568

National Library of Medicine (U.S.)

OSU:32435028638286

Medicine

U.S. National Commission for UNESCO. / United States. Department of State

OSU:32435064611205

National Education Association of the United States

UGA:32108012058221

Education

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Education

National Academy of Sciences (U.S.)

MINN:31951D005739770

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National Educational Association (U.S.)

HARVARD:32044030033971

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National Council of Education

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National Academy of Sciences (U.S.)

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National Science Library (Canada)

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National Academy of Sciences (U.S.)

STANFORD:36105006273028

Academies and institutes

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STANFORD:36105119631658

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National Library of Medicine (U.S.).

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National Academy of Sciences (U.S.).

WISC:89099183907

Science

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MINN:30000010687360

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National Research Council (U.S.). Division of Medical Sciences

COLUMBIA:HS65123751

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IOWA:31858045944760

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UCAL:B4237733

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UOM:39015033920722

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National Science Foundation (U.S.)

UCAL:C3008283