@article{599460,
      url = {http://digitallibrary.un.org/record/599460},
      title = {Preliminary assessment of transboundary rivers discharging  to the Baltic Sea and their major transboundary tributaries  : Pregel, Vistula and Oder /},
      publisher = {UN,},
      recid = {599460},
      pages = {18 p. :},
      address = {Geneva :. 2007-04-16},
      year = {2007},
      month = {Apr},
}