TY  - RPRT
TI  - Recommendations for Cycle II of National Water-Quality Assessment (NAWQA) Program
AU  - U.S. Geological Survey
AU  - Gail E. Mallard
AU  - Jeffrey T. Armbruster
AU  - Robert E. Broshears
AU  - Eric J. Evenson
AU  - Samuel N. Luoma
AU  - Patrick J. Phillips
AU  - Keith R. Prince
PY  - 1999
DO  - 10.3133/ofr99470
UR  - https://pubs.usgs.gov/publication/ofr99470
ID  - ofr99470
ER  -