TY  - BOOK
AU  - Torres González,Sigfredo
TI  - Compilation of ground-water level measurements obtained by the United States Geological Survey in Puerto Rico, 1958-1985
PY  - 1991///
CY  - San Juan, P.R.
PB  - Department of the Interior
KW  - Groundwater
KW  - Puerto Rico
KW  - Local
KW  - Measurement
N1  - Bibliography: p. 162-163
ER  -