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By "Trask, John B. (1824 - 1879)"
Report on the geology of Northern and Southern California embracing the mineral and agricultural resources of those sections, with statistics of the northern, southern and middle mines / by John B. Trask
By: Trask, John B. - Making of America Project.
Publication info: [Sacramento] :J. Allen, State Printer,
Contributed by: University of California Libraries (archive.org)