[Contribution of A. Ia. Krassovskiĭ to the organization of obstetric care in St. Petersburg].
D049672:History, 19th Century; D009774:Obstetrics / Q000266:history*; D012425:Russia (Pre-1917)
Vklad A. Ia. Krassovskiĭ v organizatsiiu rodovspomozheniia v Peterburge.