Publisher: Michigan Geological Survey Division / Access: Public - Yale University Library GeoBlacklight Search Results

Start Over Publisher Michigan Geological Survey Division Access Public

1. Map of the surface formations of the northern peninsula of Michigan

1957. 2011-02-14T18:40:32Z. 2015-10-21T15:20:18Z. Martin, Helen M. (Helen Mandeville), 1889-1973. Michigan Geological Survey Division. English. Public. Michigan and Upper Peninsula.

2. Map of the surface formations of the southern peninsula of Michigan [map]

1955. 2002-06-01T04:00:00Z. 2011-03-10T21:14:43Z. Martin, Helen M. (Helen Mandeville), 1889-1973. Michigan Geological Survey Division. English. Public. Michigan.

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