[Nikolaĭ Nikolaevich Petrov--the founder of Soviet oncology].
D049672:History, 19th Century; D049673:History, 20th Century; D009369:Neoplasms / Q000266:history; D012425:Russia (Pre-1917); D014586:USSR
Nikolaĭ Nikolaevich Petrov--osnovopolozhnik otechestvennoĭ onkologii.