Image Rare Books A new departure in ore dressing, 1896 A new departure in ore dressing / Wetherill Concentrating Co. South Bethlehem, Pa. : Wetherill Concentrating Co.?, 1896. 7 p. : ill. ; 25 cm. View Item
Image Rare Books De revolutionibus orbium coelestium De revolutionibus orbium coelestium [On the Revolutions of the Heavenly Spheres]. 6, 196 numbered leaves, tables, diagrams. View Item
