TY  - RPRT
TI  - Contributions to economic geology (short papers and preliminary reports), 1931-32 : Part I. - Metals and nonmetals except fuels
AU  - Gerald Francis Loughlin
PY  - 1933
DO  - 10.3133/b830
UR  - https://pubs.usgs.gov/publication/b830
ID  - b830
ER  -