[Hygienic knowledge and habits of Bulgarians at the time of their conversion to Christianity].
D002031:Bulgaria; D002835:Christianity / Q000266:history*; D049691:History, Medieval; D006920:Hygiene; D011634:Public Health / Q000266:history*
Khigiennite znaniia i navitsi u bulgarite ot vremeto na pokrustvaneto im.