TY - RPRT TI - Report of the U.S. Geological Survey's analytical evaluation program; standard reference water samples M-86 (major constituents), T-87 (trace constituents), N-10 and N-11 (nutrients), P-5 (precipitation snowmelt), and POL-1 (priority pollutants) AU - Victor J. Janzer AU - K.A. Latal PY - 1984 DO - 10.3133/ofr84128 UR - https://pubs.usgs.gov/publication/ofr84128 ID - ofr84128 ER -