BRUSTUR, Titus, Ion STĂNESCU, Rodica MACALEŢ, & Mihaela C. MELINTE - DOBRINESCU. "The mud volcanoes from Berca: a significant geological patrimony site of the Buzău Land Geopark (Romania)." Geo-Eco-Marina [Online], 21 (2015): n. pag. Web. 22 Dec. 2024