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| University of California Press |
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Feigin, Ralph D, 516.9-F297t-R
| W B Saunders |
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Cavin, Ralph K., 530.6-C382e
| Institute of Electrical and Electr |
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530.6-C382e,
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Kennedy, Ralph Dale, 325.9-K36f
| International Textbook Company |
1966
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1
2
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