URN:NBN:SI:doc-ENA9CNM12003Angelova, Doradocuments/znanstveni_clanki/acta_carsologica/html/21061165.htmdocuments/znanstveni_clanki/acta_carsologica/pdf/21061165.pdfdocuments/znanstveni_clanki/acta_carsologica/txt/21061165.txt110 strani32articlestr. 9-180583-605021061165URN:NBN:SI:doc-ENA9CNM1engSlovenska akademija znanosti in umetnostiActa carsologicaInCBolgarijaBulgariakarstkras (geologija)krasoslovjekraški pojaviKarst types in BulgariaTipi krasa v Bolgariji