Minerals yearbook  Puerto Rico. 
 Puerto Rico.  Puerto Rico Minerals yearbook. 

 - Washington  U.S. Dept. of the Interior, Bureau of Mines  [1988- 
 - v.  map  28 cm. 
 - 
 - 1988- 
<br/><br/> Subtitle varies. 
<br/><br/><label>LCCN: </label>gp 91009623  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral industries--Statistics--Periodicals.--Puerto Rico
<br/><br/><label>GPO Item No.: </label>639-F-1 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.37/a 2:P 96 r/2