@misc{indiciae1182e8d9235b,
  title = {Morphologic studies of fusulinids from the Lower Permian of West Pakistan},
  author = {R. C. Douglass},
  year = {1970},
  doi = {10.3133/pp643g},
  url = {https://pubs.usgs.gov/publication/pp643G},
  note = {Source identifier: pp643G}
}