Informe anual, 19- 

 - [San Juan, P.R.  19- 
 - v.  ill., plates, tables. 
<br/><br/><label>LCCN: </label>fel36001796  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roads--Puerto Rico.<br/>Express highways.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico