Merrill, George P <br/><br/>
First one hundred years of American geology 

 - New York:   Hafner Publishing Company,  1969 
 - xv, 735p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Universal Decimal Class. No.: </label>D 55(73)(091)   / K4