TY  - RPRT
TI  - Ground-water levels in alluvium on the south coast of Puerto Rico, February 1977
AU  - Jose Raul Diaz
PY  - 1977
DO  - 10.3133/ofr77696
UR  - https://pubs.usgs.gov/publication/ofr77696
ID  - ofr77696
ER  -