Manganese and chromium in California - Bradley, Walter W. (Walter Wadsworth), 1878-; Huguenin, Emile; Logan, C. A., 1887-1974; Tucker, W. Burling, 1880-; Waring, Clarence A. (Clarence Almon), -1918 (Sacramento, California State Printing Office, 1918)
Keywords: Manganese ores -- California; Chromium