@article{683273,
      url = {http://digitallibrary.un.org/record/683273},
      title = {United Nations Conference on the Law of Treaties:  First  and second sessions Vienna, 26 March - 24 May 1968 and 9  April - 22 May 1969 official records - Documents of the  conference},
      publisher = {UN,},
      recid = {683273},
      pages = {viii, 303 p.},
      address = {Geneva :. 1971-02-01},
      year = {1971},
      month = {Feb},
}