Johnson, R. C. <br/><br/>
Archean geology of the northern block of the Ishpeming Greenstone Belt, Marquette County, Michigan / 
by R.C. Johnson and T.J. Bornhorst 
 - Washington D.C. :  Denver, CO :  U.S. G.P.O. ;  For sale by the U.S. Geological Survey,  1991 
 - iv, 20 p. :  maps ;  29 cm. 
 - U.S. Geological Survey bulletin ;  1904-F .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Archaean<br/>Rocks, Igneous--Michigan--Marquette County<br/>Geology--Michigan--Marquette County
<br/><br/><label>Dewey Class. No.: </label>551.7120977496