@misc{indiciae343224b3361e,
  title = {Contributions to economic geology, 1905: Clays},
  author = {E.C. Eckel and W. C. Phalen and A.F. Crider and E.S. Bastin and M. L. Fuller and G. H. Ashley and C.E. Siebenthal},
  year = {1906},
  doi = {10.3133/b285l},
  url = {https://pubs.usgs.gov/publication/b285L},
  note = {Source identifier: b285L}
}