TY  - RPRT
TI  - Water resources data for Puerto Rico, surface and quality-of-water records, water years 1975-76, ground water records, water years 1973-76
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1978
DO  - 10.3133/wdrpr761
UR  - https://pubs.usgs.gov/publication/wdrPR761
ID  - wdrPR761
ER  -