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4458 Volume 17 1953 4459 Volume 17 1953
Black box, problem of the isomorphism
Invariant of Black Box
Isomorphism in Black Box
 Group (mathematical) not all science 4311 4643
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This image is reproduced courtesy of The Estate of W. Ross Ashby. Copyright 1972, 2008 © The Estate of W. Ross Ashby
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