@article{DA,
      recid = {4740},
      title = {Kidney and ureteral calculi},
      address = {1920},
      number = {DA},
      abstract = {Digital photograph of a collection of kidney and ureteral  calculi, mounted for display. Each specimen is numbered  with white labels on the black background.},
      url = {http://digitalcollections.ohsu.edu/record/4740},
      doi = {https://doi.org/10.6083/M4CV4G4Z},
}