TY  - RPRT
TI  - Preliminary map of zinc provinces in the conterminous United States
AU  - Edwin Wilson Tooker
AU  - Helmuth Wedow
PY  - 1980
DO  - 10.3133/ofr79576q
UR  - https://pubs.usgs.gov/publication/ofr79576Q
ID  - ofr79576Q
ER  -