@article{166161,
      note = {Concerns classification of navigational zones in Poland.},
      url = {http://digitallibrary.un.org/record/166161},
      title = {Study of proposals on amendments to the Recommendations on  Technical Requirements for Inland Navigation Vessels /},
      publisher = {UN,},
      recid = {166161},
      pages = {2 p.},
      address = {Geneva :. 1993-03-29},
      year = {1993},
      month = {Mar},
}