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Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870
Iowa Geological Survey
其他書名
Containing Results of Examinations and Observations Made Within the Years 1866, 1867, 1868, and 1869
出版Mills & Company, 1870
URLhttp://books.google.com.hk/books?id=TE85AQAAMAAJ&hl=&source=gbs_api
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