Fred A. Engle Jr. Dr./ Robert N. Grise Dr./ Kathryn Engle (EDT)
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GRADY BOOCH、ROBERT A. MASSIMCHUK、MICHAEL W. ENGLE
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Grady Booch/ Robert A. Maksimchuk/ Michael W. Engle/ Bobbi J. Young Ph.D./ Jim Conallen
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Paul E. Engle/ Harold Best (EDT)/ Joe Horness (EDT)/ Don Williams (EDT)/ Robert Webber (EDT)/ Sally Morgenthaler (EDT)/ Paul F. M. Zahl (EDT)/ Paul Basden (EDT)
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Robert F. Engle/ C. W. J. Granger (EDT)/ R. F. Engle (EDT)
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Robert F. Engle/ Daniel L. McFadden (EDT)
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