TY  - BOOK
AU  - 
ED  - Puerto Rico.
TI  - A pollution study of Matilde River
PY  - 1970///
CY  - Santurce, P.R.
KW  - Water
KW  - Pollution
KW  - Local
KW  - Rivers
KW  - Puerto Rico
KW  - Río Matilde Ponce, P.R
N1  - Mimeographed
ER  -