@misc{indiciae055522bb9363,
  title = {Statistical randomization in the behavioral sciences.},
  author = {H J Walberg},
  year = {1967},
  doi = {10.1126/science.156.3773.314-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/5609818/},
  note = {Source identifier: 5609818}
}