| 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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| 7164 | Volume 25 | 9-Feb-72 | 7165 | Volume 25 | 1972 |
| This page references 3 pages: 6962 6963 7154 |
This page references page 6957 This page is referenced from page 6963 |
| 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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