Electrical analog model study of the alluvial aquifer in the Yabucoa valley, Puerto Rico. 

 - [Washington]  19- 
 - v.  ill. maps. 
 - Open-File Report  73-1 .
<br/><br/> "Prepared by the U.S. Geological Survey in cooperation with Puerto Rico Environmental Quality Board [and others].  Selected references : p. 22. 
<br/><br/><label>LCCN: </label>fel36001809  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrography--Yabucoa, Puerto Rico.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico