[Qualification of Bulgarian dentists (1890-1930].
D002031:Bulgaria; D002568:Certification / Q000266:history*; D003815:Dentists; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008005:Licensure, Dental / Q000266:history*
Usuvurshenstvuvane na Bulgarskite zubolekari (1890-1930).