TY  - RPRT
TI  - Zinc in the United States
AU  - E.T. McKnight
AU  - W.L. Newman
AU  - A. V. Heyl
PY  - 1961
DO  - 10.3133/ofr6195
UR  - https://pubs.usgs.gov/publication/ofr6195
ID  - ofr6195
ER  -