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Browsing Natural Resources by Author "Walker, George Walton, 1921-"

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Browsing Natural Resources by Author "Walker, George Walton, 1921-"

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  • Oregon. Dept. of Geology and Mineral Industries; Walker, George Walton, 1921- (Oregon Department of Geology and Mineral Industries, 1970-06)
    Periodic violent eruptions from many different centers during Cenozoic time deposited vast quantities of pyroclastic material as ash-flow tuffs over most of Oregon, although the Coast Ranges and isolated patches elsewher ...
  • Oregon. Dept. of Geology and Mineral Industries; Walker, George Walton, 1921-; Rau, Weldon W. (Oregon Department of Geology and Mineral Industries, 1974-07)
  • Oregon. Dept. of Geology and Mineral Industries; Walker, George Walton, 1921-; Bowen, Richard G.; Shotwell, J. Arnold; Allison, Ira Shimmin, 1895-; Harlow, George Richardson; Ramp, Len; Maloney, Neil Joseph; Allen, John Eliot, 1908-; Dodds, Roland Kenneth, 1928-; Dodds, Betty; Lund, Ernest H.; Wagner, Norman Spencer; Brooks, Howard C.; Newton, Vernon C.; Eubanks, Wallace; Smith, John E. (Oregon Department of Geology and Mineral Industries, 1962-02)

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