Carlson, C. G. <br/><br/>
Upper Ordovician and Silurian rocks of North Dakota, 
by C. G. Carlson and W. P. Eastwood. 
 - Grand Forks,  1962. 
 - ii, 52 p.  illus., maps.  23 cm. 
<br/><br/> Part of illustrative matter fold. in pocket. 
<br/><br/>Bibliography: p. 23-26. 
<br/><br/><label>LCCN: </label>gs 63000205  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--North Dakota.<br/>Geology, Stratigraphic--Ordovician.<br/>Geology, Stratigraphic--Silurian.
<br/><br/><label>LC Class. No.: </label>QE149  / .C3