TY  - RPRT
TI  - National Water Data Exchange (NAWDEX) System 2000 data retrieval manual
AU  - Owen O. Williams
AU  - William A. Knecht
PY  - 1981
DO  - 10.3133/ofr81419
UR  - https://pubs.usgs.gov/publication/ofr81419
ID  - ofr81419
ER  -