@article{173095,
      url = {http://digitallibrary.un.org/record/173095},
      title = {Monitoring and assessment of conditions of transboundary  waters : note /},
      publisher = {UN,},
      recid = {173095},
      pages = {7 p.},
      address = {Geneva :. 1993-08-04},
      year = {1993},
      month = {Aug},
}