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1900

Plate CXXVII. Coos Bay Quadrangle, Orego …

[Geologic Atlas, Geology Book]

Plate CXXVII. Coos Bay Quadrangle, Orego …

1900

Plate CXXVIII. Roseburg Quadrangle, Oreg …

[Geologic Atlas, Geology Book]

Plate CXXVIII. Roseburg Quadrangle, Oreg …