[Nikolai Matveevich Liubimov as scientific and social worker; 50th anniversary of his death].
D000846:Anniversaries and Special Events; D049672:History, 19th Century; D049673:History, 20th Century; D012947:Social Work
BIOGRAPHIES
Nikolai Matveevich Liubimov kak uchenyi i obshchestvennyi deiatel'; k 50-letiiu so dnia smerti.