TY  - RPRT
TI  - Contributions to economic geology (short papers and preliminary reports) 1920.
AU  - F. L. Ransome
AU  - Hoyt Stoddard Gale
AU  - Ernest Francis Burchard
PY  - 1921
DO  - 10.3133/b715
UR  - https://pubs.usgs.gov/publication/b715
ID  - b715
ER  -