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| 4468 | Volume 17 | 1953 | 4469 | Volume 17 | 2-May-53 |
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Summary: The variation of the essential variables must be supplemented. 4482, 4581 |
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| This page references 3 pages: 4448 4482 4581 This page is referenced from page 4472 |

| 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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