TY  - RPRT
TI  - Contributions to economic geology (short papers and preliminary reports), 1921, Part II.--Mineral fuels
AU  - David White
AU  - Marius R. Campbell
PY  - 1922
DO  - 10.3133/b726
UR  - https://pubs.usgs.gov/publication/b726
ID  - b726
ER  -