@misc{74425,
  title        = {Instruments for experiments on hearing.},
  pages        = {p0008s0004},
  booktitle    = {Psychological Laboratory of Harvard University},
  publisher    = {{Cambridge, Mass.: University Press of Cambridge, 
                   Mass.}},
  copyright    = {Creative Commons Attribution-NonCommercial},
  url          = {https://vlp-new.ur.de/images/img26579}
}
