[Specialization and advanced training of medical cadres in the Peoples Republic of Bulgaria].
D002031:Bulgaria; D004501:Education, Medical; D004502:Education, Medical, Continuing; D004503:Education, Medical, Graduate; D013038:Specialization
Spetsializatsiia i usovershenstvovanie vrachebnykh kadrov v Narodnoĭ Respublike Bolgarii.