Geological research in the Lensky Mountain District in 1903

Preobrazhensky, P.Geological studies in the Lensky Mountain District in 1903: (Preliminary report) / [Op.] P. Preobrazhensky.-[St. Petersburg: B. and., 19--].-47-73 s .. -Part of the text on the fr.ulcer.Bibliogr.in the text.- [from geol.study.In Lensk.angry.district, no.IV].- Ex.: Without Titus.l.and reg., with a manpower.litter..1. Territory (collection).Electronic copy source: PBOriginal storage location: Ban RAS