F. Julius Fohs

Clays in Several Parts of Kentucky, with Some Account of Sands, Marls and Limestones. 1. Kaolins and Plastic Clays on the Eastern Rim of the Western Coalfield; Notes on Clays in the Western, Lead, Zinc and Spar District (F. J. Fohs); Clays and Sands of Jac

Clays in several parts of Kentucky