@misc{indiciae18301f87706e,
  title = {Palynology of Mesozoic and lower Tertiary samples from northern, central, and southern Pakistan},
  author = {Norman O. Frederiksen},
  year = {1992},
  doi = {10.3133/ofr92215},
  url = {https://pubs.usgs.gov/publication/ofr92215},
  note = {Source identifier: ofr92215}
}