[80th birthday of Nikolaĭ Il'ich Khlebnikov].
D001695:Biology / Q000266:history; D004782:Environmental Health; D049672:History, 19th Century; D049673:History, 20th Century; D012425:Russia (Pre-1917); D014586:USSR
K 80-letiiu so dnia rozhdeniia Nikolaia Il'icha Khlebnikova