TY  - RPRT
TI  - National Research Program of the Water Resources Division, U.S. Geological Survey, fiscal year 1991
AU  - Martha L. Nichols
AU  - Linda C. Friedman
PY  - 1991
DO  - 10.3133/ofr9238
UR  - https://pubs.usgs.gov/publication/ofr9238
ID  - ofr9238
ER  -