Walcott, Gregory D. <br/><br/>
A source book in geology. 

 - New York :  McGraw-Hill,  1939. 
 - 702 p. ;  21 cm 
 - Source book in the history of the sciences .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología histórica
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>55:92