Uber Induktion von Embryonalanlagen durch Implantation artfremder Organisatoren H Spemann und Hilde Mangold Sonderdruck Mikroskopische Anatomie Entwicklungsmechanik Herausgegeben Wilhelm Roux unter Mitwirkung von H Braus und H Spemann 100 Band 3 /4. Heft Julius Spring Facsimile reproduction of the cover of an original reprint of the 1924 article by Hans Spemann and Hilde Mangold, with a handwritten dedication by H. Spemann which reads"With best regards, HS ( Courtesy of K. Sander, Freiburg)Facsimile reproduction of the cover of an original reprint of the 1924 article by Hans Spemann and Hilde Mangold, with a handwritten dedication by H. Spemann which reads "With best regards, H.S." (Courtesy of K. Sander, Freiburg)