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1
Neodymium isotopic evidence for Early Proterozoic units in the Watersmeet Gneiss Dome, northern Michigan /
by Barovich, Karin M., Patchett, John
[Washington, D.C.] : U.S. G.P.O., 1991

Government Document Book
2
Phosphorite and other apatite-bearing sedimentary rocks in the Precambrian of northern Michigan /
by Cannon, W. F., Klasner, J. S.
Arlington, Va. : U.S. Geological Survey, 1976

Government Document Book
3
Geology of the Precambrian W (lower Precambrian) rocks in western Gogebic County, Michigan /
by Schmidt, Robert Gordon, 1924-
Washington : U.S. Govt. Print. Off., 1976

Government Document Book
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