Author
Geological Survey (U.S.),
4
Peck, Dallas L. 1929-
2
Addicott, Warren O.,
1
Bargar, Keith E.
1
Beeson, Melvin H.
1
Dall, William Healey, 1845-1927
1
Dall, William Healey, 1845-1927,
1
Geological Survey (U.S.)
1
Keith, Terry E. C.
1
McWilliams, Robert Gene, 1939-
1
Moore, Raymond C. 1892-1974,
1
Newton, Vernon C.
1
Oregon. Department of Geology and Mineral Industries
1
Oregon. Department of Geology and Mineral Industries,
1
Volkes, Harold E.,
1
Weaver, Charles E. 1880-1958
1