@article{244263,
      url = {http://digitallibrary.un.org/record/244263},
      title = {Methodologies and practices for quality control in  international coal trade /},
      publisher = {UN,},
      recid = {244263},
      pages = {8 p.},
      address = {Geneva :. 1995-09-26},
      year = {1995},
      month = {Sep},
}