■ Two years of Biafra: Encountered by his recent military success Col.Ojukwu has said that Biafra is ready to face a 10-year war ■ Personalities and politics in Ghana: 3: AS soon as it was realised that the National Liberation Council was serious about an early return to civilian rule in Ghana ■ ILO's golden jubilee: The International Labour Organisation (ILO) celebrates its 50th anniversary this week. Founded in 1919, and affili ated to the League of Nations ■ Africans Before Columbus?: Mr Thor Heyerdahl, the Norwegian anthropologist who became famous for sailing across the south Pacific on a raft of balsa wood ■ Books and publications: The British legacy: The civil service in Commonwealth Africa by A. L. Adu ■ Books and publications: The writer in modern Africa edited by Per Wastberg ■ Commercial news: Lowest-ever US aid budget: Africa is bottom of the list in President Nixon's foreign aid budget which is itself the lowest proposed by a president ■ Commercial news: Shuffling forward at Brussels: Talks in Brussels on May 28-29 between the ministers of the six countries of the European common market ■ Dateline Africa: Ghana: Keeping the NLC out of politics: Brigadier Afrifa has told chairmen of regional committees of administration to ensure that the NLC is not dragged ■Dateline Africa: Nigeria: Ojukwu to release oilmen: The Portuguese foreign ministry announced on Wednesday that Biafra has decided to release the 18 oilmen 114 Italian, three German, one Lebanese captured in the midwest