TY  - RPRT
TI  - Preferred method for removing surface contaminants from geobotanical samples before metals analysis
AU  - C. M. Ager
AU  - N.M. Milton
AU  - M.S. Power
PY  - 1985
DO  - 10.3133/ofr85379
UR  - https://pubs.usgs.gov/publication/ofr85379
ID  - ofr85379
ER  -