Author: Delhaes, W., & Gerth, H., 1912.:
Title: Geologische Beschreibung des Kettenjura zwischen Reigoldswil (Baselland) und Oensingen (Solothurn). [Geol. Paläont. Abh., N.F., 11.]
Description: Jena: G. Fischer, 1912. Large 4to. Pp. 97,[19], 1 old. col. geol. map (scale 1:25,000), 8 plates of sections (fold.) and photos. Cloth-backed boards. Very good.

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