@misc{indiciae034e6346e63f,
  title = {An improved approach; programmed instruction for central service technicians.},
  author = {T A Schwertner},
  doi = {10.1080/00185868.1977.9950425},
  url = {https://pubmed.ncbi.nlm.nih.gov/903134/},
  note = {Source identifier: 903134}
}