TY - RPRT TI - Reconnaissance of trace-organic compounds in ground water throughout Puerto Rico, October 1983 AU - Senen Guzman-Rios AU - Ferdinand Quinones-Marquez PY - 1984 DO - 10.3133/ofr84810 UR - https://pubs.usgs.gov/publication/ofr84810 ID - ofr84810 ER -