@article{87037,
      note = {"Prepared by the Central Statistical Service (Data  Management Division) of UNCTAD on Behalf of the  Committee".},
      url = {http://digitallibrary.un.org/record/87037},
      title = {Tungsten statistics : annual bulletin of the UNCTAD  Committee on Tungsten.},
      publisher = {UN,},
      recid = {87037},
      address = {New York :. 1990},
      year = {1990},
}