@article{DA,
      url = {http://digitalcollections.ohsu.edu/record/4423},
      title = {Billroth coins},
      abstract = {Digital photograph of two Billroth coins, issued by  Austria on the anniversary of the birth of Theodor  Billroth. The coins have been set on a gray counter, one  showing heads and the other tails. The small cardboard box  which houses them can also be seen.},
      number = {DA},
      doi = {https://doi.org/10.6083/M4M32T5C},
      recid = {4423},
      address = {1929},
}