TY  - RPRT
TI  - Bias in the analysis of geological materials for gold using current methods, by G.E.M. Hall et al.
AU  - J. B. McHugh
AU  - R. M. O’Leary
PY  - 1992
DO  - 10.1016/0375-6742(89)90098-8
UR  - https://pubs.usgs.gov/publication/70016553
ID  - 70016553
ER  -