TY  - RPRT
TI  - Field determination of nanogram quantities of mercury in soils and rocks
AU  - Margaret Hinkle
AU  - Kam Wo Leong
AU  - F. N. Ward
PY  - 1965
DO  - 10.3133/ofr6571
UR  - https://pubs.usgs.gov/publication/ofr6571
ID  - ofr6571
ER  -