TY  - RPRT
TI  - Preliminary map of tin occurrence areas in the conterminous United States
AU  - Bruce L. Reed
AU  - Edwin Wilson Tooker
PY  - 1980
DO  - 10.3133/ofr79576l
UR  - https://pubs.usgs.gov/publication/ofr79576L
ID  - ofr79576L
ER  -