The World: FOUR WHO MIGHT LEAD

Assuming Rhodesia's Prime Minister Ian Smith makes good on his promise to cede power to his country's black majority, a number of Africans will be in line for the leadership. The four main contenders:

JOSHUA NKOMO, 59, is president of the domestic faction of the African National Council (A.N.C.), the most moderate of Rhodesia's black nationalist organizations. He is the grand old man of black politics in Rhodesia. A relaxed, friendly politician of the flesh-pressing school, Nkomo is the only one of the four who has lived in the country during the past year....