[Professor Nikolaĭ Nikolaevich Aleksandrov (on his 50th birthday].
D049673:History, 20th Century; D009369:Neoplasms / Q000266:history; D011871:Radiology / Q000266:history; D002094:Republic of Belarus
Professor Nikolaĭ Nikolaevich Aleksandrov (k 50-letiiu so dnia rozhdeniia)