TY - BOOK AU - Wilson,Hewitt AU - Treasher,Raymond Clarence TI - Preliminary report of some of the refactory clays of western Oregon, T2 - Oregon. State Dept. of Geology and Mineral Industries. Bulletin AV - TN942 .W54 U1 - 285 sB no. 6 PY - 1938/// CY - [Portland, Ore.] KW - Clay KW - Oregon KW - Clay industries N1 - "This paper presents the results of work done under a cooperative agreement between the Bureau of Mines, the University of Washington and the Oregon State Department of Geology and Mineral Industries."; Photoprinted; Bibliographical foot-notes ER -