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by Hogan, John F.; Burkholder, Alex A.; Hoff, Robert
by Ferrell, Robert H.; Hoff, Joan
by Timko, Robert M.; Hoff, Joan Whitman
by Robert Hoff
by Hoff, Ray; Mathers, Robert T.
by Editor: Ray Hoff; Editor: Robert T. Mathers
by Van 't Hoff, Robert
by Friedman, John; Hoff, Jean Connell; Chazan, Robert
by Hoff, Robert