TY  - RPRT
TI  - Contributions to economic geology (short papers and preliminary reports), 1928 : Part I. - Metals and nonmetals except fuels
AU  - Gerald Francis Loughlin
AU  - George Rogers Mansfield
PY  - 1929
DO  - 10.3133/b805
UR  - https://pubs.usgs.gov/publication/b805
ID  - b805
ER  -