@article{DA,
      url = {http://digitalcollections.ohsu.edu/record/6805},
      title = {Artificial heart valves},
      abstract = {Digital scan of a 35mm slide. Two early models of  artificial heart valve, rubberized disks with flap valves  and white mesh cloth covering. Shown on a green fabric  background, with a ruler to indicate size.},
      number = {DA},
      doi = {https://doi.org/10.6083/M4W094KK},
      recid = {6805},
}