Cretaceous and Lower Tertiary Stratigraphy in west-central Puerto Rico 
by. Peter H. Mattson 
 - Washington  U.S. Govt. Print. Off  1967 
 - iii, 35 pages  illustrations, maps  24 cm. 
<br/><br/> Prepared in cooperation with the commonwealth of Puerto Rico Economic Development Administration, Industrial Research Department."   
<br/><br/>Includes bibliographical references (pages 34-35) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.3:1254-B