Report geological travel to the Pechora region and the Timan tundra: (Research 1874): With geol. kart. and 5 tab. fossils / [Op.] Alexander Stukenberg. - St. Petersburg: type. Imp. Acad. Sciences, 1875. -125 pp., 6 liters. ill., maps. : ill. ; 22. - Ott. from "Materials for the Geology of Russia", v. 6, 1875.
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