Briggs, Reginald Peter  1929 <br/><br/>
Changes in Stratigraphic nomenclature in the Cretaceous system, east-central Puerto Rico 
by Reginald P. Brigs 
 - Whashington  U.S.Govt. Print. Off.  1969 
 - iii, 31 pages  illustrations  24 cm. 
<br/><br/> As of 07/01/2016, GPO could not validate the distribution status of this little for the FDLP. <br/><br/>"Prepared in cooperation with the Commonwealth of Puerto Rico Economic Development Administration, Industrial Research Department.  
<br/><br/>Includes bibliographical references (pages 29-31) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Cretaceous
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.3:1274-O