Editore: Nevada Bureau of Mines, Reno, Nevada, 1970
Condizione: good. from the abstract, "Large quantities of clay minerals of the montmorillonite group are consumed in foundries, rotary drilling, pelletizing iron-ore concentrates, and oil refining; they are widely used in many other industrial applications." DQ2. stapled binding, name written on top, 11" x 8.5", 45 pages, indexed, foldout map inside rear cover, some pencil underlining.