@misc{indiciae7777c2aad456, title = {Reconnaissance of trace-organic compounds in ground water throughout Puerto Rico, October 1983}, author = {Senen Guzman-Rios and Ferdinand Quinones-Marquez}, year = {1984}, doi = {10.3133/ofr84810}, url = {https://pubs.usgs.gov/publication/ofr84810}, note = {Source identifier: ofr84810} }