Water resources of the Jobos area, Puerto Rico a preliminary appraisal, 1962

San Juan, P.R. 1972 .
32 p. , Includes a Chemical quality of water in Caño Tiburones, Puerto Rico; a reconnaissance study carred out in 1967 by José Raúl Díaz (map series no. 2) inserted.

Water resources of the Ponce area, Puerto Rico

Commonwealth of Puerto Rico United States Geological Survey 1972 .
26 p.

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Water resources of the Jobos area, Puerto Rico a preliminary appraisal, 1962

Water resources of the Ponce area, Puerto Rico