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| Penguin Books |
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| McGraw-Hill Book Company |
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Goodman, Raymond J., 591.98-G653mm
| W. C. Brown Co. |
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Schmidgall, Raymond S., 596.8-S349hh
| Educational Institute of the American Hotel & Motel Association |
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Gindroz, Ray, 539.7-G492u
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Whittington, O. Ray, 325.9-W626w
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Anderson, David Ray, 413.8-A545e
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Whittington, Ray O, 325.956-W626p
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Chapra, Steven C., 530.071-C467i
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