1. 2-12 May, 1980
Zaire, Congo, Kenya, Ghana, Upper Volta (now Burkina Faso), Ivory Coast.
[see, AAS, 72 (1980), 421-541]
2. 12-18 February, 1982
Nigeria, Benin, Gabon, Equitorial Guinea.
[see, AAS, 74 (1982), 608-636]
3. 9-19 August, 1985
Togo, Ivory Coast, Cameroon, Central African Republic, Zaire, Kenya, Morocco.
[see, AAS, 78 (1985), 28-104
4. 10-19 September, 1988
Zambia, Zimbabwe, Botswana, Lesotho, Swaziland, Mozambique.
[see, AAS, 81 (1989), 322-368]
5. 26 January - 1 February, 1990
Cape Verde, Mali, Burkina Faso, Chad.
[see, AAS, 82 (1990), 804-825]
6. 1-10 September, 1990
Tanzania, Burundi, Rwanda, Ivory Coast.
[see, AAS, 83 (1991), 209-236]
7. 19-26 February, 1992
Senegal, Gambia, Guinea Bisau.
[see, AAS, 83 (1993), 148-178]
8. 6-9 June, 1992
Sao Tome and Principe, Angola.
[see, AAS, 85 (1993), 500-528]
9. 3-10 February, 1993
Benin, Uganda, Sudan.
[see, AAS, 85 (1993), 937-963]
10. 14-20 September, 1995
Cameroon, South Africa, Kenya.
[see, AAS, 87 (1995), 920]
11. 14 April, 1996: Tunisia
12. 21-23 March, 1998: Nigeria
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Updated: May 01, 2002