| 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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| 1517 | Volume 07 | 1943 | 1518 | Volume 07 | 1943 |
| This page references page 1493 |
This page references page 1493 |
| 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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