TY  - BOOK
ED  - The Council on Environmental
TI  - The delaware river basin: an environmental assessment of three centuries of quality 
U1  -  628.16837 
PY  - 1975///
CY  - Washington, D.C.
PB  - U.S. Government Printing Office
KW  - Water quality
KW  - Measurement
KW  - Water quality bioassay
N1  - Bibliography : p. 84-87
ER  -