@misc{indiciae86b712686e41,
  title = {Learning.},
  author = {E L WALKER},
  year = {1957},
  doi = {10.1146/annurev.ps.08.020157.000553},
  url = {https://pubmed.ncbi.nlm.nih.gov/13403608/},
  note = {Source identifier: 13403608}
}