TY  - BOOK
ED  - Geological Survey (Estados Unidos)
TI  - Quality of surface waters of the United States, 1960
AV  - TD380 Q83
PY  - 1968///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - Agua
KW  - Análisis
KW  - Estados Unidos
N1  - Contenido: Parte 3 y 4. Ohio river basin and St. Lawrence river basin"
ER  -