@article{ETD, recid = {1292}, author = {Nordberg, Rodney C.}, title = {The force decay behavior of polyurethane ligature modules}, school = {Certificate in Orthodontics}, address = {1987}, number = {ETD}, url = {http://digitalcollections.ohsu.edu/record/1292}, doi = {https://doi.org/10.6083/M4C53J0Q}, }