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by Cowan, George A.
by George & Cowan
by Roper, George W.; Roper, Claire Tootie; Cowan, Curt M.
by Jacobs, Lila; Cintrón, José; Canton, Cecil E.; et al.
by Cowan, George S. M., Jr., M.d.; Reynolds, Robert G.
by Edited by Adrian O. Alvarez , Edited in association with Jay B. Brodsky , Martin A. Alpert , George S. M. Cowan
by Buchwald, Henry, Ph.D.; Cowan, George S. M., Jr., M.d.; Pories, Walter J., M.d.
by Cowan, George A.; Pines, David; Meltzer, David