@misc{ais_repository_140010,
  title = {A non-parametric analysis of productivity},
  author = {Richard L. Barrows and University of Wisconsin--Extension and University of Wisconsin--Madison. Dept. of Agricultural Economics},
  year = {2018},
  publisher = {},
  howpublished = {Repository AIS},
  note = {oai:ais:library-item:3764}
}