TY  - BOOK
CN  - I 19.76:
CY  - [Reston, Va.] :
CY  - [Denver, Colo. :
DA  - 1994]
ID  - 196890
KW  - Water quality
N1  - Distributed to depository libraries in microfiche.
N1  - Shipping list no.: 95-0601-M.
PB  - U.S. Geological Survey, Dept. of the Interior ;
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  - 94-101
ER  -