Origin, extent, and thickness of Quaternary geologic units in the Willamette Valley, Oregon /
O'Connor, Jim E.,1959-
Oregon.Water Resources Dept.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the U.S. Geological Survey, Information Services,
2001.
One folded col. map in pocket.
Includes bibliographical references (p. 37-40).
Geology, Stratigraphic
Geology