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Author/Creator
- Geological Survey (U.S.)4
- Westchester County Water Agency2
- Wolcott, Stephen W.2
- Crist, Marvin A., 1930-1
- Geological Survey (U.S.). Water Resources Division. Caribbean District1
- Irwin, Don J.1
- Puerto Rico. Department of Agriculture1
- Ramos-Ginés, Orlando1
- Román-Más, Angel J.1
- Snow, Robert F.1
- Wyoming. State Engineer's Office1