TY  - RPRT
TI  - Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in April 1992 :T-119 (trace constituents), M-122 (major constituents), N-34 (nutrients), N-35 (nutrients), Hg-14 (mercury)
AU  - H.K. Long
AU  - J.W. Farrar
PY  - 1992
DO  - 10.3133/ofr92164
UR  - https://pubs.usgs.gov/publication/ofr92164
ID  - ofr92164
ER  -