@misc{indiciaefdd1bc893573,
  title = {Analytical results for B-horizon soil samples, from the International Falls and Roseau 1° x 2° quadrangles, Minnesota/Ontario},
  author = {G. O. Riddle and A. L. Meier and J. M. Motooka and O. Erlich and J. R. Clark and J. A. Saunders and D.L. Fey and T. Sparks},
  year = {1992},
  doi = {10.3133/ofr92721},
  url = {https://pubs.usgs.gov/publication/ofr92721},
  note = {Source identifier: ofr92721}
}