ARBENZ, PAUL - Geologische Untersuchunge des Frohnalpstockgebietes (Kanton Schwyz).

1905. Beitr. Geol. Karte Schweiz NF XVIII. Lf.; ix, 82 pp. 28 fig. 1 plt. h.t. with geol. sections folding-out, 1 plt. with col. geol. map folding-out. Orig. wrps. with minor traces of use, contents very good, uncut, 4to.