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Surface water
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Rivers
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Road construction
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Oregon Digital
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20 p. An offprint of the journal Contracting, this pamphlet contains four reprints of articles and photographs previously published in the summer of 1916. Three articles are reprinted from Contracting, ...
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2. [Image] Pillars of Hercules on the Columbia River
Colored image. Close-in view of the Pillars of Hercules rock formation as seen from the vista of the Columbia River, facing the riverbank. In the foreground is the riverbank where it touches upon a sandy ...Citation -
3. [Image] Pillars of Hercules on the Columbia River
Colored image. Close-in view of the Pillars of Hercules rock formation as seen from the vista of the Columbia River, facing the riverbank. In the foreground is the riverbank where it touches upon a sandy ...Citation