Report of the sanitary quality of the Cibuco River watershed 
by Rafael Muñoz. 
 - n.p.  s.n.  1967. 
 - 12 p.  charts, maps. 
<br/><br/> Mimeographed. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Pollution.<br/>Rivers--Puerto Rico<br/>Cibuco River, Puerto Rico.