01237nam a2200229Ia 4500 251253 20160527185946.0 011004e2000 pr a gr 000 0 eng d PUCPR 21 553.79 R6961d Rodríguez-Martínez, Jesús. Local 270689 Detection of conduit-controlled ground-water flow in northwestern Puerto Rico using aerial photograph interpretation and geophysical methods by Jesús Rodríguez-Martínez, and Ronald T. Richards ; in cooperation with the Puerto Rico Aqueduct and Sewer Authority. San Juan, P.R. U.S. Dept. of the Interior, U.S. Geological Survey Denver, CO Branch of Information Services [distributor] 2000. v, 45 p. ill., maps (some col.) 28 cm. Includes bibliographical references and index. Groundwater flow Puerto Rico. Local 106124 Aerial photography in hydrogeology Puerto Rico. Local 49534 Geophysics Puerto Rico. Local 101990 Karst Puerto Rico. Local 119217 Richards, Ronald T. Local 159344 Autoridad de Acueductos y Alcantarillados de Puerto Rico. Local 56261 180588 180588 0 0 ddc 0 553_790000000000000_R6961D 0 evl 100973 10 10 B 2016-05-27 Federal Depository 348334 0 553.79 R6961d 80000002106725 2016-05-27 00:00:00 r:251253 6