TY - BOOK AU - Beach,John Osa TI - ... Volcanic ash and tripoli, AV - TN24.O5 A35 no. 1 U1 - (553.09766) 553.69 PY - 1938/// CY - Norman KW - Volcanic ash, tuff, etc KW - Mines and mineral resources KW - Oklahoma N1 - At head of title: Oklahoma Geological Survey. Robert H. Dtt, director; "Data obtained from State mineral survey, WPA project 65-65-538, 1936-37; FERA material survey 1934; Oklahoma Geological survey, Bulletin, 13, 1914; and Bulletin, 28, 1917."; Reproduced from typewritten copy; Errata slip inserted; Bibliography: p. [27]-28 ER -