TY  - RPRT
TI  - Contributions to economic geology, 1908, Part I, Metals and nonmetals except fuels--Cement and Concrete Materials
AU  - G. C. Martin
PY  - 1909
DO  - 10.3133/b380j
UR  - https://pubs.usgs.gov/publication/b380J
ID  - b380J
ER  -