@misc{indiciae635771e68119,
  title = {Petrography and stratigraphy of glacial drift, Mesabi-Vermilion Iron Range area, northeastern Minnesota},
  author = {Thomas C. Winter and R. D. Cotter and H. L. Young},
  year = {1973},
  doi = {10.3133/b1331c},
  url = {https://pubs.usgs.gov/publication/b1331C},
  note = {Source identifier: b1331C}
}