@article{Valdes:181430,
      recid = {181430},
      author = {Valdes, I. Alberto},
      title = {TWO SYNOPTIC VIEWS},
      address = {1973-08},
      number = {983-2016-77217},
      pages = {15},
      year = {1973},
      url = {http://ageconsearch.umn.edu/record/181430},
      doi = {https://doi.org/10.22004/ag.econ.181430},
}