TY  - RPRT
TI  - Colorimetric determinations of traces of bismuth in rocks
AU  - Frederick Norville Ward
AU  - Harry E. Crowe
PY  - 1956
DO  - 10.3133/b1036i
UR  - https://pubs.usgs.gov/publication/b1036I
ID  - b1036I
ER  -