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BY AUTHOR
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Bentley, W. A., and W. J. Humphreys
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Breen, Mark, and Kathleen Friestad
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Carnegie Library of Pittsburgh Science and Technology Department
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Johnson, Charles W., and Gale Lawrence
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Lawrence, Gale (and Charles W. Johnson)
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Leslie, Clare Walker, and Frank E. Gerace
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Martin, Jacqueline Briggs
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Thompson, Elizabeth H., and Eric R. Sorenson
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