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12
Tertiary and quaternary geology of the lower Rio Grade regi..
United States congressional serial set ; serial set no. 9583;House document / 72nd Congress, 1st session. House ; no. 111
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Shorter contributions to general geology, 1922, [by] David ..
United States congressional serial set ; serial set no. 8307;House document / 68th Congress, 1st session. House ; no. 62