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by Paul S. Gray , John B. Williamson , David A. Karp , John R. Dalphin
by John Gray (The University of Toledo, Department of Biological Sciences)
by Kunz, John A.; Soltys, Florence Gray
by Mckendrick, John Gray
by McKendrick, John Gray
by Reeve, Arthur B.; Grey, John W.
by Grey, John Temperley
by Bell, John Gray
by Foster, John Gray
by Barbaro, Giosofat; Stanley, Henry Edward John; Grey, Charles