Sims, P. K.  1918- <br/><br/>
Archean and early Proterozoic tectonic framework of North-Central United States and adjacent Canada / 
by P.K. Sims. 
 - Washington, D.C. :  U.S. Government Printing Office,  1995. 
 - iii, 12 p. :  ill., map ;  28 cm. 
 - U.S. Geological Survey bulletin ;  1904-T Contributions to Precambrian geology of Lake Superior region ;  ch. T. .
<br/><br/> Includes one folded color plate in pocket. 
<br/><br/>Includes bibliographical references (p. 10-12). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Precambrian.<br/>Geology, Structural--Middle West.<br/>Geology, Structural--Canada.
<br/><br/><label>LC Class. No.: </label>QE75  QE653  / .B9 no. 1904-T