TY  - RPRT
TI  - Contributions to economic geology, 1908, Part I, Metals and nonmetals except fuels--Clays
AU  - G.C. Matson
PY  - 1909
DO  - 10.3133/b380k
UR  - https://pubs.usgs.gov/publication/b380K
ID  - b380K
ER  -