Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Berg, Joseph W.; Baker, Charles D.(Oregon Department of Geology and Mineral Industries, 1962-09)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Peterson, Norman V.; Groh, Edward A.(Oregon Department of Geology and Mineral Industries, 1964-09)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; Corcoran, Raymond E.(Oregon Department of Geology and Mineral Industries, 1965-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Brooks, Howard C.; Newton, Vernon C.(Oregon Department of Geology and Mineral Industries, 1966-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; American Mining Congress(Oregon. Dept. of Geology and Mineral Industries., 1967-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; Bowen, Richard G.(Oregon Department of Geology and Mineral Industries, 1971-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; Bowen, Richard G.(Oregon Department of Geology and Mineral Industries, 1972-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Bowen, Richard G.; Newton, Vernon C.; Beulieu, John D.(Oregon Department of Geology and Mineral Industries, 1973-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; Beaulieu, John D.; Bowen, Richard G.(Oregon Department of Geology and Mineral Industries, 1974-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; Bowen, Richard G.; Beaulieu, John D.(Oregon Department of Geology and Mineral Industries, 1975-01)
Oregon. Dept. of Geology and Mineral Industries; Mason, Ralph S.; Newton, Vernon C.; Hull, Donald A.; Beaulieu, John D.(Oregon Department of Geology and Mineral Industries, 1976-01)