@misc{indiciae6125014fb8e2,
  title = {Use of grain-shape regularity measurements in determining source area in secondary pyroclastic rocks, McLendon Volcano, Yavapai County, Arizona},
  author = {William E. Brooks and Charles Thomas Pierson},
  year = {1983},
  doi = {10.3133/ofr83630},
  url = {https://pubs.usgs.gov/publication/ofr83630},
  note = {Source identifier: ofr83630}
}