| Eugene Coste. "Volcanic Origin of Natural Gas and Petroleum." The Journal of the Canadian Mining Institute, Volume 6, 1903 RadwaŃski, Andrzej B.. The oil and ozokerite mine in Boryslav and historical monuments of petroleum and salt industries in the vicinity of Boryslav (Ukrainian Fore-Carpathian region). Geotourism/Geoturystyka, [S.l.], n. 18, p. 35, Feb. 2014. |
Truskavets, Drohobych Raion, Lviv Oblast, Ukraine