TY  - RPRT
TI  - Determination of silver in soils, sediments, and rocks by organic-chelate extraction and atomic absorption spectrophotometry
AU  - T. T. Chao
AU  - J.W. Ball
AU  - H. M. Nakagawa
PY  - 1971
DO  - 10.1016/s0003-2670(01)81856-0
UR  - https://pubs.usgs.gov/publication/70010401
ID  - 70010401
ER  -