@misc{indiciaef57e6d60e8ac,
  title = {Copyright Record Book Class R Vol 72 PART 1; Renewal Numbers 71000-71499; 1950},
  year = {1950},
  url = {https://www.loc.gov/item/coprecbooks-00491363654/},
  note = {Source identifier: coprecbooks-00491363654}
}