TY  - RPRT
TI  - Ground-water levels on the south coast of Puerto Rico, February 1976
AU  - J. E. Heisel
AU  - J.R. Gonzalez
PY  - 1976
DO  - 10.3133/ofr76705
UR  - https://pubs.usgs.gov/publication/ofr76705
ID  - ofr76705
ER  -