TY  - RPRT
TI  - Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Lime, Magnesite
AU  - Charles Butts
PY  - 1907
DO  - 10.3133/b315g
UR  - https://pubs.usgs.gov/publication/b315G
ID  - b315G
ER  -