[The October Revolution and maternal welfare in Bulgaria].
D002031:Bulgaria; D003148:Communism / Q000266:history; D005260:Female; D049673:History, 20th Century; D006801:Humans; D008427:Maternal Health Services / Q000266:history*; D008429:Maternal Welfare / Q000266:history*; D011247:Pregnancy
Oktomvriiskata revoliutsiia i rodilnata pomosht v Bulgariia.