Annual report, 19- 

 - Mayagüez, P.R.  Water Resources Research Institute, School of Engineering  19- 
 - v.  illus., diagrs., tables. 
<br/><br/> Cover title. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water<br/>Water--Supply.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Water.