TY - BOOK ED - TI - Effects of changing irrigation practices on the ground-water hydrology of the Santa Isabel-Juana Diaz area, south central Puerto Rico PY - 1994/// CY - San Juan, PR, Denver, CO PB - U.S. Dept of the Interior, U.S. Geological Survey KW - Puerto Rico KW - Santa Isabel Region N1 - Shipping List no: 94-0276-P; Includes Bibliographical references (p.21-22) UR - http://catalog.gpo.gov/fdlpdir/locate.jsp?ItemNumber=0624B&SYS=000423402 ER -