@misc{indiciaebe51d3e8e1e8,
  title = {Comparison of the Cracow-Silesian mississippi valley-type district, southern Poland, with mississippi valley-type districts in North America},
  author = {D. L. Leach and J.G. Viets},
  year = {1992},
  doi = {10.3133/ofr92704},
  url = {https://pubs.usgs.gov/publication/ofr92704},
  note = {Source identifier: ofr92704}
}