REED, S C Morphological differences and problems of speciation in Drosophila. [electronic resource] - Evolution; international journal of organic evolution Mar 1948 - 40-8 p. digital Publication Type: Journal Article ISSN: 0014-3820 Standard No.: 10.1111/j.1558-5646.1948.tb02730.x doi Subjects--Topical Terms: AnimalsDrosophila