title: [On the 75th Birth Anniversary of Igor Gudkov].
mesh_terms: D004463:Ecology / Q000266:history* / Q000458:organization & administration; D049673:History, 20th Century; D049674:History, 21st Century; D011834:Radiation Monitoring / Q000266:history; D011835:Radiation Protection / Q000266:history; D011853:Radiobiology / Q000266:history* / Q000458:organization & administration; D012426:Russia