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| 4626 | Volume 17 | 1953 | 4627 | Volume 17 | 1953 |
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Summary: Studying variety with the methods of the theory of sets. |
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| This page is referenced from page 4782 |

| 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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