@article{1487-2016-122435,
      recid = {154235},
      title = {Changes in Farm Production and Efficiency, 1977},
      address = {1977},
      number = {1487-2016-122435},
      series = {SB 581},
      pages = {81},
      year = {1977},
      url = {http://ageconsearch.umn.edu/record/154235},
}