@article{ETD,
      recid = {1723},
      author = {Putnam, Wayne D.},
      title = {Root resorption of maxillary central incisors},
      school = {Certificate in Orthodontics},
      address = {1977},
      number = {ETD},
      url = {http://digitalcollections.ohsu.edu/record/1723},
      doi = {https://doi.org/10.6083/M4JM27VV},
}