TY  - BOOK
AU  - Clark, David W.
CN  - I 19.76:
CY  - [Reston, Va.] :
CY  - [Denver, Colo. :
DA  - 1994.
ID  - 196763
KW  - Water quality
KW  - Water quality
KW  - Water quality
N1  - Distributed to depository libraries in microfiche.
N1  - Shipping list no.: 95-0614-M.
PB  - U.S. Dept. of the Interior, U.S. Geological Survey ;
PB  - Books and Open-File Reports Section, distributor],
PP  - [Reston, Va.] :
PP  - [Denver, Colo. :
PY  - 1994.
T1  - National Water-Quality Assessment Program.
TI  - National Water-Quality Assessment Program.
VL  - 94-124
ER  -