title: [NIKOLA I NIKOLAEVICH PETROV].
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D009369:Neoplasms; D011013:Pneumonectomy; D013514:Surgical Procedures, Operative; D014586:USSR
keywords: HISTORY; HISTORY OF MEDICINE, 20TH CENT.; NEOPLASMS; OBITUARIES; PNEUMONECTOMY; SURGERY, OPERATIVE; USSR
vernacular_title: NIKOLA I NIKOLAEVICH PETROV.