| 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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| 5772 | Volume 21 | 1957 | 5773 | Volume 21 | 1957 |
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Step-mechanism ? necessary 5225 5782 |
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| This page is referenced from page 5781 |
| 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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