TY  - RPRT
TI  - Preliminary report of the geology of the Barranquitas quadrangle, Puerto Rico
AU  - R. P. Briggs
AU  - P. A. Gelabert
PY  - 1962
DO  - 10.3133/i336
UR  - https://pubs.usgs.gov/publication/i336
ID  - i336
ER  -