@misc{indiciae6d3f79b42768,
  title = {Text to accompany slides/photographs of Lower Cretaceous pollen and spores in sediments from the Muirkirk clay pit (Prince Georges County, MD)},
  author = {Eleanora I. Robbins},
  year = {1991},
  doi = {10.3133/ofr91642},
  url = {https://pubs.usgs.gov/publication/ofr91642},
  note = {Source identifier: ofr91642}
}