[Nikolaĭ Alekseevich Preobrazhenskiĭ (on his 70th birthday)].
D002626:Chemistry, Pharmaceutical / Q000266:history; D049673:History, 20th Century; D014586:USSR
Nikolaĭ Alekseevich Preobrazhenskiĭ (k 70-letiiu so dnia rozhdeniia)