TY  - RPRT
TI  - Water resources data for Puerto Rico, Water Year 1978
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1981
DO  - 10.3133/wdrpr781
UR  - https://pubs.usgs.gov/publication/wdrPR781
ID  - wdrPR781
ER  -