TY  - RPRT
TI  - Geologic map of the Cabo Rojo and Parguera quadrangles, southwest Puerto Rico
AU  - R.P. Volckmann
PY  - 1984
DO  - 10.3133/i1557
UR  - https://pubs.usgs.gov/publication/i1557
ID  - i1557
ER  -