Mongolia 1/ 2/ . 24 October 1994 a 22 January 1995 
Morocco 1/ . 12 February 1959 a 7 June 1959 
Mozambique 1/ . 11 June 1998 a 9 September 1998 
Nepal 1/ 2/  . 4 March 1998 a 2 June 1998 
Netherlands 1/ 10 June 1958 24 April 1964 23 July 1964 
New Zealand 1/ . 6 January 1983 a 6  April 1983 
Niger . 14 October 1964 a 12 January 1965 
Nigeria 1/ 2/ . 17 March 1970 a 15 June 1970 
Norway 1/ 5/ . 14 March 1961 a 12 June 1961 
Oman . 25 February 1999 a 26 May 1999 
Pakistan 30 December 1958 . . 
Panama . 10 October 1984 a 8 January 1985 
Paraguay . 8 October 1997 a 6 January 1998 
Peru . 7 July 1988 a  5 October 1988 
Philippines 1/ 2/ 10 June 1958 6 July 1967 4 October 1967 
Poland  1/ 2/ 10 June 1958 3 October 1961 1 January 1962 
Portugal c/ 1/ . 18 October 1994 a 16 January 1995 
Qatar . 30 December 2002 a 30 March 2003 
Republic of Korea 1/ 2/ . 8 February 1973 a 9 May 1973 
Republic of Moldova 1/ 6/ . 18 September 1998 a 17 December 1998 
Romania 1/ 2/ 3/ . 13 September 1961 a 12 December 1961 
Russian Federation d/ 3/ 29 December 1958 24 August 1960 22 November 1960 
Saint Vincent and the Grenadines 1/ 2/ . 12 September 2000 a 11 December 2000 
San Marino . 17 May 1979 a 15 August 1979 
Saudi Arabia 1/ . 19 April 1994 a 18 July 1994 
Senegal . 17 October 1994 a  15 January 1995 
Serbia and Montenegro f/  1/ 2/ 6/ . 12 March 2001  d 27 April 1992