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[UC Berkeley] Five Geology Extracts by George Becker, All Signed by George Davidson--Four Presented by George F. Becker to Davidson
American Journal of Science, Late 19th Century. [UC Berkeley] Five Geology Extracts by George Becker, All Signed by George Davidson--Four Presented by George F. Becker to Davidson Fractional Crystallization of Rocks, extract from American Journal of Science, September 1897, signed by Davidson. Good condition. Torsional Theory of Joints.....
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