@misc{indiciaed444b5dfef74,
  title = {Mafic and ultramafic xenoliths from volcanic rocks of the Western United States},
  author = {H. G. Wilshire and C.E. Meyer and J. K. Nakata and L. C. Calk and J.W. Shervais and J. E. Nielson and E.C. Schwarzman},
  year = {1988},
  doi = {10.3133/pp1443},
  url = {https://pubs.usgs.gov/publication/pp1443},
  note = {Source identifier: pp1443}
}