TY  - RPRT
TI  - Mineral resources of the United States, 1914: Part II - Nonmetals
AU  - Hiram Dryer McCaskey
AU  - Ernest Francis Burchard
PY  - 1916
DO  - 10.3133/70175810
UR  - https://pubs.usgs.gov/publication/70175810
ID  - 70175810
ER  -