Author: KREBS, J.
Title: Geologische Beschreibung der Blümlisalp-Gruppe.
Description: 1925. Beitr. Geol. Karte d. Schweiz NF 54-III; 75 pp. 10 fig. 1 col. plt. w. geol. sections folding-out. Orig. wrps. lower part of spine worn, contents very good, uncut, 4to.

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