Pérez-Blair, Francisco. <br/><br/>
Ground-water resources of alluvial valleys in northeastern Puerto Rico  Río Espíritu Santo to Río Demajagua area 
 Ground water resources of alluvial valleys in northeastern Puerto Rico  Río Espíritu Santo to Río Demajagua area 
by Francisco Pérez-Blair ; prepared in cooperation with the Puerto Rico Aqueduct and Sewer District. 
 - San Juan, P.R.  Denver, CO  U.S. Dept. of the Interior, U.S. Geological Survey  Branch of Information Services [distributor]  1997. 
 - v, 25 p.  ill., maps  28 cm. 
 - Water resources investigations report  96-4201 .
<br/><br/> Shipping list no.: 97-0254-P.  Two maps on folded leaves in pocket. 
<br/><br/>Includes bibliographical references (p. 24-25). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Groundwater--Puerto Rico--Espíritu Santo River Watershed.<br/>Groundwater--Puerto Rico--Demajagua River Watershed.
<br/><br/><label>GPO Item No.: </label>0624-B 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.42/4:96-4201