1922- <br/><br/>
Cretaceous and Tertiary rocks in the Corozal quadrangle, northern Puerto Rico  
by Arthur E. Nelson ; prepared in cooperation with the Economic Development Administration of Puerto Rico. 
<br/><br/> Title from title screen (viewed September 15, 2014). 
<br/><br/>Includes Bibliographical references (page 20). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Puerto Rico
<br/><br/><label>GPO Item No.: </label>0620 
<br/><br/><label>Gov. Doc. Class. No.: </label>| 19.3:1244-C