[An oncological conference in the besieged Leningrad].
D003226:Congresses as Topic / Q000266:history*; D015709:Correspondence as Topic / Q000266:history*; D013502:General Surgery / Q000266:history; D049673:History, 20th Century; D006801:Humans; D008495:Medical Oncology / Q000266:history*; D014586:USSR; D047789:World War II