TY  - RPRT
TI  - Geologic and hydrologic data collected at test holes NC-1 and NC-3, Guaynabo and San Juan, eastern Puerto Rico
AU  - Jesús Rodríguez-Martínez
AU  - Richard A. Scharlach
AU  - Arturo Torres-Gonzalez
PY  - 1991
DO  - 10.3133/ofr91217
UR  - https://pubs.usgs.gov/publication/ofr91217
ID  - ofr91217
ER  -