Origin, extent, and thickness of Quaternary geologic units in the Willamette Valley, Oregon /

by O'Connor, Jim 1959-, O'Connor, Jim 1959-
Published 2001

Debris flows from failures of neoglacial-age moraine dams in the three sisters and Mount Jefferson Wilderness Areas, Oregon /

by O'Connor, Jim 1959-, O'Connor, Jim 1959-, Hardison, Jasper H., Costa, John E.
Published 2001