@misc{indiciae85f1b047e8eb,
  title = {Observations on the Harvard step test.},
  author = {E N KEEN and A W SLOAN},
  year = {1958},
  doi = {10.1152/jappl.1958.13.2.241},
  url = {https://pubmed.ncbi.nlm.nih.gov/13575336/},
  note = {Source identifier: 13575336}
}