TY  - RPRT
TI  - Manganese contents of some sedimentary rocks of Paleozoic age in Virginia
AU  - Eric R. Force
AU  - Leslie J. Cox
PY  - 1991
DO  - 10.3133/b1916
UR  - https://pubs.usgs.gov/publication/b1916
ID  - b1916
ER  -