TY  - RPRT
TI  - Statistical summary of geochemical data furnished by 146 laboratories for six geochemical exploration reference samples
AU  - B. F. Arbogast
AU  - D.E. Detra
AU  - George VanTrump
PY  - 1987
DO  - 10.3133/ofr87436
UR  - https://pubs.usgs.gov/publication/ofr87436
ID  - ofr87436
ER  -