TY - RPRT TI - Potentiometric surface of the alluvial aquifer and hydrologic conditions near Gurabo and Juncos, Puerto Rico, March 1988 AU - Juan C. Puig AU - Jose M. Rodriguez PY - 1990 DO - 10.3133/wri904059 UR - https://pubs.usgs.gov/publication/wri904059 ID - wri904059 ER -