@article{Busch:295159,
      recid = {295159},
      author = {Busch, Wilhelm},
      title = {Ein Beitrag zur Produktivitätsfrage},
      journal = {German Journal of Agricultural Economics/ Agrarwirtschaft},
      address = {1952},
      year = {1952},
      url = {http://ageconsearch.umn.edu/record/295159},
      doi = {https://doi.org/10.22004/ag.econ.295159},
}