Field studies in the Archæan rocks of Minnesota, with accessory observations in Ontario, Michigan and Wisconsin.

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Bibliographic Details
Author / Creator:Winchell, Alexander, 1824-1891
Imprint:Ann Arbor, Mich., Register printing and publishing co., 1889.
Description:[494] p. illus., pl., fold col. map, diagrs. 24 cm.
Subject:Geology, Stratigraphic -- Archaean
Geology -- Minnesota
Archaean Geologic Period.
Geology, Stratigraphic.
Format: Print Book
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Notes:Various paging.
Extracted from the 15th and 16th annual reports of the Geological and natural history survey of Minnesota.
committed to retain 20170930 20421213 HathiTrust