518,550 ANDREEV D. /red./ Diabetes. Proceedings of the International Symposium on Diabetes Sofia, November 32rd to 25th, 1970. Ed. I.Pencev, A.Popov, D .Andreev, L. Sirakov. Sofia 1972 publishing House of the Bulgarian Academy of Sciences 8° s. 395 nib.1,ilustr. soderz. /Druga k.tyt. w jęz. bulg./