@article{87022,
      note = {"Annual bulletin of the UNCTAD Committee on Tungsten".},
      url = {http://digitallibrary.un.org/record/87022},
      title = {Tungsten statistics 1989.},
      publisher = {UN,},
      recid = {87022},
      pages = {v, 69 p. :},
      address = {New York :. 1990},
      year = {1990},
}