TY  - RPRT
TI  - The use of plants in prospecting for precious metals, principally gold; a selected bibliography and topic index
AU  - J. A. Erdman
AU  - J. C. Olson
PY  - 1985
DO  - 10.3133/ofr85118
UR  - https://pubs.usgs.gov/publication/ofr85118
ID  - ofr85118
ER  -