@misc{1191466, author = {Edith L R Corliss}, title = {Circular of the Bureau of Standards no. 516::selection of hearing aids}, year = {1951}, month = {1951-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.CIRC.516}, language = {en}, }