TY  - RPRT
TI  - Publications of the U.S. Geological Survey, Water Resources Division, for Puerto Rico and the U.S. Virgin Islands, 1899-1992
AU  - Ruth I. Guzman-Otero
PY  - 1994
DO  - 10.3133/ofr93629
UR  - https://pubs.usgs.gov/publication/ofr93629
ID  - ofr93629
ER  -