@misc{indiciae59195ff7f468,
  title = {Origin of the Ayer granodiorite in the Lowell area, Massachusetts},
  author = {Richard H. Jahns},
  year = {2014},
  doi = {10.1029/tr023i002p00341-2},
  url = {https://pubs.usgs.gov/publication/70213067},
  note = {Source identifier: 70213067}
}