Institut po biologiia i patologiia na razmnozhavaneto i nerazni bolesti (Akademiia na selskostopanskite nauki)

Immunologi︠︡ia spermatozoidov i oplodotvoreni︠︡ia : trudy mezhdunarodnogo simpoziuma, sost︠o︡iavshegosi︠a︡ v Varne, Bolgarii 27-29 sen︠t︡iabri︠a︡ 1967 g. = Immunology of spermatozoa and fertilization proceedings of the international symposium held in Varna, Bulgaria September 27-29, 1967 / [K. Bratanov, otvetstvennyĭ redaktor].