BRIGGS, Reginald P. <br/><br/>
Changes in Stratigraphic Nomenclature in the Cretaceous System East-Central Puerto Rico / 
By Reginald P. Briggs. 
 -- Washington :   United States Government Printing Office,   1969 
 - 31 p. -- 
 (Geological Survey Bulletin  ;  1274-O).
<br/><br/> Fecha real de registro 04-08-1969 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nomenclatura estratigráfica<br/>Puerto Rico
<br/><br/><label>Universal Decimal Class. No.: </label>551.7(083.7)