@misc{indiciaed7998dd761a9, title = {Mineral resources of the Big Frog Wilderness Study Area, Polk County, Tennessee and Fannin County, Georgia}, author = {John F. Slack and Gertrude C. Gazdik and Maynard L. Dunn}, year = {1979}, doi = {10.3133/ofr791209}, url = {https://pubs.usgs.gov/publication/ofr791209}, note = {Source identifier: ofr791209} }