Letter dated 25 May 1988 from the Permanent Representative of Czechoslovakia to the United Nations addressed to the Secretary-General Czechoslovakia Correspondence 1988-08-27 A/S-15/17 EN
Letter dated 27 May 1988 from the Permanent Representative of Czechoslovakia to the United Nations addressed to the Secretary-General Czechoslovakia Correspondence 1988-05-31 A/S-15/19 EN
Letter dated 3 June 1988 from the Permanent Representative of Czechoslovakia to the United Nations addressed to the Secretary-General Czechoslovakia Correspondence 1988-06-03 A/S-15/26 EN
