Descripción
Notas:Prelim.: "Most of the essays presented in this book were papers prepared for a conference on the language problems of the developing nations at Airlie House, Warrenton, Virginia, November 1-3, 1966."
Descripción Física:xv, 521 p. : il., mapas ; 23 cm
Bibliografía:Incluye referencias bibliográficas e índice