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200 1 $a<<The >>Concept and the Role of the Model in Mathematics and Natural and Social Sciences$eProceedings of the Colloquium sponsored f by the Division of Philosophy of Sciences organized at Utrecht, January 1960,$fby H ans Freudenthal.
210   $aDordrecht (NL)$cReidel$d1961
225 1 $aSynthese Library
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996   $aConcept and the role of the model in mathematics and natural and social sciences$9341195
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