@misc{indiciae5e0efad5e396,
  title = {A guide for selected sampling methods for different source conditions.},
  author = {W C Achinger and R T Shigehara},
  year = {1968},
  doi = {10.1080/00022470.1968.10469175},
  url = {https://pubmed.ncbi.nlm.nih.gov/5686385/},
  note = {Source identifier: 5686385}
}