Author: KUENEN, Ph. H.
Title: The porphyry district of Lugano West of the Valganna.
Description: Leiden, Eduard Ijdo, 1925,. 265x185mm, paperback. Scotch on the back. Name of the owner on the front cover. Tears on the back cover. text and full-page illustrations, pages 130 to 184, 3 folding maps,

Keywords: Geology Helvetica Tessin