TY  - RPRT
TI  - Surficial geologic maps and data on three potential offshore sand sources on the insular shelf of Puerto Rico
AU  - K. A. Grove
AU  - J. V. A. Trumbull
PY  - 1978
DO  - 10.3133/mf1017
UR  - https://pubs.usgs.gov/publication/mf1017
ID  - mf1017
ER  -