TY  - RPRT
TI  - Potentiometric surface of the principal aquifer and hydrologic conditions in the Ponce-Juana Diaz area, Puerto Rico, April-May, 1987
AU  - Felix Rodriguez-del-Rio
AU  - Vicente Quinones-Aponte
PY  - 1989
DO  - 10.3133/wri894115
UR  - https://pubs.usgs.gov/publication/wri894115
ID  - wri894115
ER  -