title: [Negatoscope - an instruction board for conference halls].
mesh_terms: D003226:Congresses as Topic; D004503:Education, Medical, Graduate; D004864:Equipment and Supplies; D005085:Exhibitions as Topic; D011859:Radiography; D011871:Radiology / Q000193:education
vernacular_title: Hegatoskop-uchebnaia doska dlia konferents-zalov