Africa in the twentieth century / Walter Goldschmidt -- The character of American interests in Africa / Rupert Emerson -- The character and viability of African political systems / James S. Coleman -- External political pressures on Africa today / Vernon McKay -- The character and potential of African economies / S. Daniel Neumark -- The African economy and international trade / Andrew M. Kamarck -- Racial situations and issues in Africa / William O. Brown and Hylan Lewis -- Culture and changing values in Africa / Walter Goldschmidt -- The African operations of United States government agencies / Vernon McKay -- Statistical tables and maps.