TY  - RPRT
TI  - Contributions to economic geology, 1905 : Iron and Manganese
AU  - E.C. Eckel
AU  - E.M. Kindle
AU  - R.J. Holden
AU  - C. K. Leith
PY  - 1906
DO  - 10.3133/b285e
UR  - https://pubs.usgs.gov/publication/b285E
ID  - b285E
ER  -