Geology and hydrogeology of the Caribbean Islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands 
by Robert A. Renken ... [et al.]. 
 - Boulder, Colo.  U.S. Geological Survey  2002. 
 - ix, 139 p.  ill., maps (5 folded in 2 pockets)  29 cm. 
 - U.S. Geological Survey professional paper  1419 .
<br/><br/>Bibliography: p. 131-139. 
<br/><br/><label>ISBN: </label>0607993618 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrogeology--Puerto Rico.<br/>Aquifers--Virgin Islands of the United States.<br/>Aquifers--Puerto Rico.<br/>Hydrogeology--Virgin Islands of the United States.