USBM IC 6122
Title:Graphite. part ii. domestic and foreign deposits
Publisher:U.S. Bureau of Mines
Ordering Info:This publication is out of print. Reproductions may be available. Download below or please see our publication sales page for more information.
Tyler, P.M., 1929, Graphite. part ii. domestic and foreign deposits: U.S. Bureau of Mines Information Circular 6122, 25 p.