1. Effects of changing irrigation practices on the ground-water hydrology of the Santa Isabel-Juana Díaz area, south central Puerto Rico Author/Creator: Ramos-Ginés, Orlando, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1994 Resource Type: Book Access & Availability: Loading
2. Ground-water resources in Lajas Valley, Puerto Rico Author/Creator: Graves, Robert P., author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
3. Single-well injection and recovery of freshwater from an aquifer containing saline water at Arecibo, Puerto Rico Author/Creator: Quiñones-Aponte, Vicente, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1989 Resource Type: Book Access & Availability: Loading
4. Water required, water used, and potential water sources for rice irrigation, north coast of Puerto Rico Author/Creator: Román-Más, Angel J., author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
5. Elevation of the water-table surface for the alluvial aquifer and hydrologic conditions in the Santa Isabel-Juana Diaz area, Puerto Rico, March 1986 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: San Juan, Puerto Rico : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Map Access & Availability: Loading
6. Water resources of the Rio Grande de Anasco - lower valley, Puerto Rico Author/Creator: Díaz, José Raúl, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1987 Resource Type: Book Access & Availability: Loading
7. Water resources of the lower Rio Grande de Arecibo alluvial valley, Puerto Rico = Recursos de aqua de valle aluvial costanero del Rio Grande de Arecibo, Puerto Rico Author/Creator: Quiñones-Aponte, Vicente, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
8. A reconnaissance of the water resources of the central Guanajibo Valley, Puerto Rico Author/Creator: Colón-Dieppa, Eloy, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
9. Use of surface-geophysical techniques for ground-water exploration in the Canovanas-Rio Grande area, Puerto Rico Author/Creator: Torres-González, Arturo, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
10. Water resources of the Sabana Seca to Vega Baja area, Puerto Rico Author/Creator: Torres-González, Arturo, author Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, 1984 Resource Type: Book Access & Availability: Loading