Statistics on petroleum products and motor vehicles 
by Olga E. Rodríguez. 
 - [San Juan, P.R.]  1975. 
 - 47 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum products--Statistics--Puerto Rico.<br/>Motor vehicles--Statistics--Puerto Rico.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Statistics.