Hájek, M [The development of thoracic surgery in Czechoslovakia over the last 50 years]. [electronic resource] - Rozhledy v chirurgii : mesicnik Ceskoslovenske chirurgicke spolecnosti Mar 1987 - 149-53 p. digital Publication Type: Historical Article; Journal Article ISSN: 0035-9351 Subjects--Topical Terms: CzechoslovakiaHistory, 20th CenturyThoracic Surgery--history