@misc{indiciaea6ee9f6c4986,
  title = {Valve morphology and systematic position of Navicula walkeri (Bacillariophyceae), a diatom endemic to Oregon and California (USA)},
  author = {J.P. Kociolek and S. A. Spaulding and J.C. Kingston},
  year = {1998},
  doi = {10.1127/nova.hedwigia/67/1998/235},
  url = {https://pubs.usgs.gov/publication/70021344},
  note = {Source identifier: 70021344}
}