TY - BOOK AU - McGuinness,C.L. ED - Autoridad de Acueductos y Alcantarillados de Puerto Rico. ED - Geological Survey (U.S.) TI - Ground-water resources of Puerto Rico PY - 1948///?] CY - [San Juan?] PB - Puerto Rico Aqueduct and Sewer Service KW - Water, Under ground KW - Puerto Rico KW - Local N1 - "Prepared in cooperation with the Geological Survey, U.S. Department of the Interior."; "1948."; Includes bibliographical references ER -