Matches in DBpedia 2014 for { ?s ?p Douglass Houghton (September 21, 1809 – October 13, 1845) was an American geologist and physician, primarily known for his exploration of the Keweenaw Peninsula of Michigan.. }
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- Douglass_Houghton abstract "Douglass Houghton (September 21, 1809 – October 13, 1845) was an American geologist and physician, primarily known for his exploration of the Keweenaw Peninsula of Michigan.".
- Douglass_Houghton comment "Douglass Houghton (September 21, 1809 – October 13, 1845) was an American geologist and physician, primarily known for his exploration of the Keweenaw Peninsula of Michigan.".