@article{265732,
      author = {Medina Echavarría, José},
      url = {http://digitallibrary.un.org/record/265732},
      title = {Discurso sobre política y planeación /},
      publisher = {Siglo Veintiuno Editores, SA,},
      recid = {265732},
      pages = {viii, 231 p.},
      address = {Ciudad de México ; Madrid ; Buenos Aires :. 1972},
      year = {1972},
}