4th. international conference on birth defects.Vienna.Austria 2-8 September 1973.
Card's contents:INTERNATIONAL CONGRESS SERIES EXCERPTA MEDICA no. 297 521,310 4th. international conference on birth defects.Vienna.Austria 2-8 September 1973. Abstracts of papers.Ed.Arno G.Motulsky. Amsterdam 1973 Excerpta Medica 8° s,VI,105. Excerpta Medica,International Congress Series, no 297.