[Characteristic features of personality and activities of I. I. Grekov; 20th anniversary of his death].
D000846:Anniversaries and Special Events; D049672:History, 19th Century; D049673:History, 20th Century; D010551:Personality
BIOGRAPHIES
Kharakternye cherty lichnosti i deiatel'nosti I. I. Grekova; k 20-letiiu so dnia smerti.