| Country | Action | Action Date | Effective Date |
|---|
| ACP STATES | | | |
| BAHAMAS | Signature | 28/02/1975 | |
| BAHAMAS | Ratification | 03/02/1976 | |
| BARBADOS | Signature | 28/02/1975 | |
| BARBADOS | Ratification | 07/01/1976 | |
| BELGIUM | Signature | 28/02/1975 | |
| BELGIUM | Ratification | 29/12/1975 | |
| BENIN | Signature | 28/02/1975 | |
| BENIN | Ratification | 04/09/1975 | |
| BOTSWANA | Signature | 28/02/1975 | |
| BOTSWANA | Ratification | 09/10/1975 | |
| BURUNDI | Signature | 28/02/1975 | |
| BURUNDI | Ratification | 17/09/1975 | |
| CAMEROON | Signature | 28/02/1975 | |
| CAMEROON | Ratification | 06/10/1975 | |
| CAPE VERDE | Accession | 01/11/1978 | |
| CENTRAL AFRICAN REPUBLIC | Signature | 28/02/1975 | |
| CENTRAL AFRICAN REPUBLIC | Ratification | 31/07/1975 | |
| CHAD | Signature | 28/02/1975 | |
| CHAD | Ratification | 27/10/1975 | |
| COMOROS | Accession | 13/09/1976 | |
| CONGO, PEOPLES REPUBLIC OF | Signature | 28/02/1975 | |
| CONGO, PEOPLES REPUBLIC OF | Ratification | 29/07/1975 | |
| DENMARK | Signature | 28/02/1975 | |
| DENMARK | Ratification | 03/07/1975 | |
| DJIBOUTI | Accession | 02/02/1978 | |
| DOMINICA, COMMONWEALTH OF | Accession | 26/02/1979 | |
| EQUATORIAL GUINEA | Signature | 28/02/1975 | |
| EQUATORIAL GUINEA | Ratification | 16/03/1976 | |
| ETHIOPIA | Signature | 28/02/1975 | |
| ETHIOPIA | Ratification | 12/01/1976 | |
| EUROPEAN COMMUNITY | Signature | 28/02/1975 | |
| EUROPEAN COMMUNITY | Ratification | 17/02/1976 | |
| FIJI | Signature | 28/02/1975 | |
| FIJI | Ratification | 08/07/1975 | |
| FRANCE | Signature | 28/02/1975 | |
| FRANCE | Ratification | 31/12/1975 | |
| GABON | Signature | 28/02/1975 | |
| GABON | Ratification | 15/12/1975 | |
| GAMBIA THE | Signature | 28/02/1975 | |
| GAMBIA THE | Ratification | 15/07/1975 | |
| GERMANY FEDERAL REPUBLIC | Signature | 28/02/1975 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 30/12/1975 | |
| GHANA | Signature | 28/02/1975 | |
| GHANA | Ratification | 07/08/1975 | |
| GRENADA | Signature | 28/02/1975 | |
| GRENADA | Ratification | 14/10/1975 | |
| GUINEA | Signature | 10/04/1975 | |
| GUINEA | Ratification | 29/08/1975 | |
| GUINEA BISSAU | Signature | 16/05/1975 | |
| GUINEA BISSAU | Ratification | 12/06/1975 | |
| GUYANA | Signature | 28/02/1975 | |
| GUYANA | Ratification | 05/12/1975 | |
| IRELAND, REPUBLIC OF | Signature | 28/02/1975 | |
| IRELAND, REPUBLIC OF | Ratification | 28/01/1977 | |
| ITALY | Signature | 28/02/1975 | |
| ITALY | Ratification | 17/02/1976 | |
| IVORY COAST | Signature | 28/02/1975 | |
| IVORY COAST | Ratification | 15/01/1976 | |
| JAMAICA | Signature | 28/02/1975 | |
| JAMAICA | Ratification | 17/06/1975 | |
| KENYA | Signature | 28/02/1975 | |
| KENYA | Ratification | 17/02/1976 | |
| KIRIBATI | Accession | 28/10/1979 | |
| LESOTHO | Signature | 28/02/1975 | |
| LESOTHO | Ratification | 06/11/1975 | |
| LIBERIA | Signature | 28/02/1975 | |
| LIBERIA | Ratification | 07/11/1975 | |
| LUXEMBOURG | Signature | 28/02/1975 | |
| LUXEMBOURG | Ratification | 30/12/1975 | |
| MADAGASCAR | Signature | 28/02/1975 | |
| MADAGASCAR | Ratification | 26/11/1975 | |
| MALAWI | Signature | 28/02/1975 | |
| MALAWI | Ratification | 27/05/1975 | |
| MALI | Signature | 28/02/1975 | |
| MALI | Ratification | 09/12/1975 | |
| MAURITANIA | Signature | 28/02/1975 | |
| MAURITANIA | Ratification | 23/02/1976 | |
| MAURITIUS | Signature | 28/02/1975 | |
| MAURITIUS | Ratification | 29/07/1975 | |
| NETHERLANDS THE | Signature | 28/02/1975 | |
| NETHERLANDS THE | Ratification | 30/12/1975 | |
| NIGER | Signature | 26/09/1975 | |
| NIGERIA | Signature | 28/02/1975 | |
| NIGERIA | Ratification | 24/04/1975 | |
| PAPUA NEW GUINEA | Accession | 01/11/1978 | |
| RWANDA | Signature | 28/02/1975 | |
| RWANDA | Ratification | 09/09/1975 | |
| SAINT LUCIA | Accession | 07/07/1979 | |
| SAO TOME AND PRINCIPE | Accession | 01/11/1978 | |
| SENEGAL | Signature | 28/02/1975 | |
| SENEGAL | Ratification | 22/07/1975 | |
| SEYCHELLES | Accession | 27/08/1976 | |
| SIERRA LEONE | Signature | 28/02/1975 | |
| SIERRA LEONE | Ratification | 03/10/1975 | |
| SOLOMON ISLANDS | Accession | 27/09/1978 | |
| SOMALI DEMOCRATIC REPUBLIC | Signature | 28/02/1975 | |
| SOMALI DEMOCRATIC REPUBLIC | Ratification | 17/07/1975 | |
| ST VINCENT AND THE GRENADINES | Accession | 27/02/1980 | |
| SUDAN | Signature | 28/02/1975 | |
| SUDAN | Ratification | 30/07/1975 | |
| SURINAME | Accession | 15/07/1976 | |
| SWAZILAND | Signature | 28/02/1975 | |
| SWAZILAND | Ratification | 19/12/1975 | |
| TANZANIA | Signature | 28/02/1975 | |
| TANZANIA | Ratification | 15/10/1975 | |
| TOGO | Signature | 28/02/1975 | |
| TOGO | Ratification | 17/06/1975 | |
| TONGA | Signature | 28/02/1975 | |
| TONGA | Ratification | 17/06/1975 | |
| TRINIDAD AND TOBAGO | Signature | 28/02/1975 | |
| TRINIDAD AND TOBAGO | Ratification | 30/06/1975 | |
| TUVALU | Accession | 17/01/1979 | |
| UGANDA | Signature | 28/02/1975 | |
| UGANDA | Ratification | 18/11/1975 | |
| UNITED KINGDOM | Signature | 28/02/1975 | |
| UNITED KINGDOM | Ratification | 31/12/1975 | |
| UPPER VOLTA | Signature | 28/02/1975 | |
| UPPER VOLTA | Ratification | 07/11/1975 | |
| WESTERN SAMOA | Signature | 28/02/1975 | |
| WESTERN SAMOA | Ratification | 27/11/1975 | |
| ZAIRE | Signature | 28/02/1975 | |
| ZAIRE | Ratification | 18/11/1975 | |
| ZAMBIA | Signature | 28/02/1975 | |
| ZAMBIA | Ratification | 16/03/1976 | |