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?t=t&id=56791737 Geological section from the Mississippi River to the Pacific Ocean / Prepared in the Office of Pacific Rail Road Explorations & Surveys, War Department, from notes & collections of the geologist of the expedition, Mr. Jules Marcou, by William P. Blake.
From Parts (In 4 layers) Depicts: 1854 Last modified about 4 years ago. Unrectified.
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