Author: Houghton, Douglass, 1809-1845 / Subject: Geology - Yale University Library GeoBlacklight Search Results

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1. Geological map of townships in the northern peninsula of Michigan : subdivided by D. Houghton D.S. in the year 1845

1849. 2013-08-30T20:20:36Z. 2013-09-03T21:20:52Z. Houghton, Douglass, 1809-1845. Lith. by E. Weber & Co. English. Public. Upper Peninsula (Mich.), Michigan, and Upper Peninsula.

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1. Geological map of townships in the northern peninsula of Michigan : subdivided by D. Houghton D.S. in the year 1845

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