@misc{indiciaebfb4a299aaa1,
  title = {Composition and physical properties of granitic rocks from the NRDC/SAS seismic station sites, Eastern Kazakh SSR},
  author = {William Leith and E.C. Robertson and B.H. Bryant and Paul Boden},
  year = {1991},
  doi = {10.3133/ofr91639},
  url = {https://pubs.usgs.gov/publication/ofr91639},
  note = {Source identifier: ofr91639}
}