Keyes, Charles Rollin,  1864-1942. <br/><br/>
Chart of the geologic terranes of Iowa, 
by Charles Keyes; fifteenth thousand, rev. 
 - Des Moines,  R. Henderson, State Printer,  1914. 
 - 3 p.  23 cm. 
<br/><br/><label>LCCN: </label>gs 15000070  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Iowa.
<br/><br/><label>LC Class. No.: </label>QE111  / .K4 1914