@article{Ballay:327445,
      recid = {327445},
      author = {Ballay, Attila},
      title = {A törzslúdtartás gazdaságossága},
      journal = {GAZDÁLKODÁS: Scientific Journal on Agricultural Economics},
      address = {1968},
      year = {1968},
      url = {http://ageconsearch.umn.edu/record/327445},
}