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by Frazer, Perry D.; Chambers, Roger
by McWhiney, Grady; Jamieson, Perry D.
by Gunderson, John G.; Hoffman, Perry D., Ph.D.
by Smith, Ethel D.; Smith-perry, Mary Ellen
by Jamieson, Perry D.
by Frey, Perry A.; Hegeman, Adrian D.
by Perry, Guillermo E.; Maloney, William F.; Arias, Omar S.; et al.
by Carroll, Julia Elizabeth, Ph.D.; Perry, Bruce D., M.D., Ph.D.
by Hoffman; Perry D