TY  - RPRT
TI  - Contributions to economic geology (short papers and preliminary reports), 1919: Part II - Mineral fuels
AU  - David White
AU  - G. H. Ashley
PY  - 1920
DO  - 10.3133/b711
UR  - https://pubs.usgs.gov/publication/b711
ID  - b711
ER  -