@article{91671,
      url = {http://digitallibrary.un.org/record/91671},
      title = {Study tour in Bulgaria : advance notice.},
      publisher = {UN,},
      recid = {91671},
      pages = {3 p.},
      address = {Geneva :. 1982-01-20},
      year = {1982},
      month = {Jan},
}