575.1S Scheinfeld, Amram You and heredity by Amram Scheinfeld; assisted in the genetic sections by Dr. Morton D. Schweitzer. Eith four color-plates, seventy one line illustrations, maps and diagrams by the author, and six halftone reproductions from photograhs. new York, Frederick A. Stokes, 1939. xviip. 434p. col. front., illus., plates (part col.) port., diagrs. 22cm.