Title: Pŭrva Nauchnoprakticheska konferent͡sii͡a s mezhdunarodno uchastie na tema Sot͡sialno-ikonomicheski problemi na teritorialnata infrastruktura, 10 i 11 dekemvri, 1986 g
Subjects: Congresses, Infrastructure (Economics)
Places: Bulgaria, Khaskovski okrŭg