@misc{indiciae2c47ca9d1ecb,
  title = {Seismic-refraction study of suspected drift-filled bedrock valleys in Ramsey County, Minnesota},
  author = {D. G. Woodward},
  year = {1985},
  doi = {10.3133/wri854107},
  url = {https://pubs.usgs.gov/publication/wri854107},
  note = {Source identifier: wri854107}
}