@misc{indiciae9e5ac081428b,
  title = {NDT-certification notes.},
  author = {S R Harris},
  year = {1983},
  doi = {10.1093/ptj/63.8.1312},
  url = {https://pubmed.ncbi.nlm.nih.gov/6878442/},
  note = {Source identifier: 6878442}
}