| 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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| 4954 | Volume 18 | 1954 | 4955 | Volume 18 | 1954 |
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Protocol primary observation |
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| This page is referenced from page 5055 |
| 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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