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Himus, GW, and Sweeting, GS. (1951). The Elements of Field Geology. London: University Tutorial Press. 1st edition. viii + 268pp. + 2 foldout maps. HB. University Tutorial Press.
Sloan, Robert E (2002). Geological Guidebook to Zermatt. Zermatt: Association of the Alpine Museum of Zermatt, 63pp. Zermatt Museum.