TY  - BOOK
AU  - 
TI  - Hydrology and water quality of the principal springs in Puerto Rico
PY  - 1988///
CY  - San Juan, P.R.
PB  - Geological Survey
KW  - Water quality
KW  - Puerto Rico
KW  - Measurement
KW  - Local
KW  - Springs
KW  - Water
ER  -