@misc{indiciae5f16eedb3e34,
  title = {Duration of mineralization and fluid-flow history of the Upper Mississippi Valley zinc-lead district},
  author = {E. L. Rowan and M. B. Goldhaber},
  year = {1995},
  doi = {10.1130/0091-7613(1995)023<0609:domaff>2.3.co;2},
  url = {https://pubs.usgs.gov/publication/70018926},
  note = {Source identifier: 70018926}
}