616.99477
Al281

H2306

Alfthan, Olof S. A Comparative Study of the Growth of Skin and Human Skin Tumors on the Chorio-Allantoic Membrane of the Embryonated Chicken Eggs / Olof S. Alfthan. - [s.l.] : Helsingfors, 1956
81p.; ill. Includes bibligarphical references * Epidemology and Skin * Malignant Melanoma * Skin Tumors *