General and engineering geology of the Wray area, Colorado and Nebraska - Hill, Dorothy Rachel, 1920-; Tomkin, Jessie M. (Washington, [D.C.] : U.S. G.P.O., 1953)
One folded map in pocket.
Bibliography: p. 62-64.
Keywords: Geology -- Colorado -- Yuma County; Geology -- Nebraska -- Dundy County; Soil mechanics; Road materials