704.749 704.750 PROCEEDINGS Proceedings of the Third Congress of the International Association for the Scientific Study of Mental Deficiency. The Hague,4th-12th September, 1973. Netherlands Congress Centre. Warsaw 1975 Pol. Med. Publ. 8° Vol. 2. Memorial Session 11th September 1973 to the late Professor L/ionel/ S/harpies/ Penrose.Ed. with the co-operatior of: J.M, Berg /i in./.s. X, nlb. 2,100, ilustr.