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| 5608 | Volume 20 | 21-May-57 | 5609 | Volume 20 | 1957 |
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Discrimination methods known 5550 Feedback discrimination used by MacCallum 5583 |
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| This page references 3 pages: 5584 5601 5600 This page is referenced from 4 pages: 5585 5595 5601 5605 |
This page references 2 pages: 5550 5601 This page is referenced from page 5550 |

| 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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