@misc{indiciae96129232666e,
  title = {Problems and techniques of supervision.},
  author = {M GROTJAHN},
  year = {1955},
  doi = {10.1080/00332747.1955.11022990},
  url = {https://pubmed.ncbi.nlm.nih.gov/14357507/},
  note = {Source identifier: 14357507}
}