[Proceedings of the German Society for Surgery, 90th session, May 30--June 2, 1973].
D003226:Congresses as Topic; D013502:General Surgery; D005860:Germany, West; D006801:Humans; D012955:Societies, Medical
Verhandlungen der Deutschen Gesellschaft für Chirurgie. 90 Tagung vom 30.Mai bis 2. Juni 1973.