Condizione: Fair. [Separatabdruck aus dem Archiv der Julius Klaus-Stiftung fur Vererbungsforschung, Sozialanthropologie und Rassenhygiene Zurich, Band XII, Heft 3/4]. Zurich: Art. Institut Orell Fussli, 1937. 1st Edition. Pp. [ii]+[587]-629+[3]. Thin octavo. Printed brown wrappers with dark brown lettering. VG with The Hartford Retreat's embossed title-page stamp and small ink call number to the front cover. Scarce. Doctoral thesis for the University of Zurich's School of Medicine. Scarce offprint on identical twins. No copy located in OCLC. Weight: 4.0 ounces = 114 grams. Size: 9.7 x 6.9 x 0.1 inches = 24.3 x 17.3 x 0.3cm. With Smith Ely Jelliffe's autopen signature to the title-page and front cover. Inquire if you need further information. Gach.