Language use and social change problems of multilingualism with special reference to Eastern Africa: studies presented and discussed at the Ninth International African Seminar at University College, Dar es Salaam, December 1968
International African Seminar9th1968University College, Dar es Salaam.
Whiteley, Wilfred Howell.
International African Institute.
London Published for the International African Institute by Oxford University Press
1971
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Multilingualism.