@article{251854,
      url = {http://digitallibrary.un.org/record/251854},
      title = {Investigations :#exclusion of all natural outbbreaks of  disease : working paper /},
      publisher = {UN, 23 Jan,},
      recid = {251854},
      pages = {5 p.},
      address = {Geneva :. 1998-01-23},
      year = {1998},
}