[On the centennary of the discovery of D. I. Mendeleev's periodic low (various factors or aspects of the "climate" of science development].
D004602:Elements / Q000145:classification*; D049672:History, 19th Century; D012425:Russia (Pre-1917)
D004602:Elements
K stolettiiu otkrytiia D. I. Mendeleevym periodicheskogo zakona (o razlichnykh faktorakh ili vidakh "klimata" razvitiia nauki)