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Author/Creator
- Geological Survey (U.S.)11
- Puerto Rico. Department of Agriculture11
- Díaz, José Raúl2
- Quiñones-Aponte, Vicente2
- Ramos-Ginés, Orlando2
- Román-Más, Angel J.2
- Torres-González, Arturo2
- Zack, Allen L.2
- Class-Cacho, Angel1
- Colón-Dieppa, Eloy1
- Geological Survey (U.S.). Water Resources Division. Caribbean District1
- Graves, Robert P.1
- Jordan, Donald G.1
- Puerto Rico Industrial Development Company1
- Puerto Rico. Department of Natural Resources1
- Quiñones, F. (Ferdinand)1
- Whitesides, Douglas V.1