TY  - RPRT
TI  - Contributions to economic geology, 1905 : Miscellaneous Nonmetals
AU  - L.H. Woolsey
AU  - G. O. Smith
PY  - 1906
DO  - 10.3133/b285o
UR  - https://pubs.usgs.gov/publication/b285O
ID  - b285O
ER  -