@article{193949,
      url = {http://digitallibrary.un.org/record/193949},
      title = {The role of services in the economy and development of Sri  Lanka.},
      publisher = {UN,},
      recid = {193949},
      pages = {i, 149 p. :},
      address = {New York :. 1991},
      year = {1991},
}