TY  - RPRT
TI  - Optimization of an extraction procedure for the accurate determination of total tin in eighteen Geological Survey of Japan rock reference materials
AU  - H.N. Elsheimer
PY  - 1993
DO  - 10.2116/analsci.9.681
UR  - https://pubs.usgs.gov/publication/70243547
ID  - 70243547
ER  -