@misc{1171131,
  author = {H H Chandler and R L Bowen and G C Paffenbarger and A L Mullineaux},
  title = {Clinical investigation of a radiopaque composite restorative material ::progress report},
  year = {1969},
  month = {1969-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.10063},
  language = {en},
}