Preface to the International Frequency List and the Weekly IFRB Circular by International Frequency Registration Board (9271040015 9789271040014 92-71-04001-5)
Plan General De Developpement Du Reseau Regional De L'Amerique Latine: 1988-1993 = General Plan for the Development of the Regional Latin American Network 1988-1993 by International Radio Consultative Committee, International Telegraph and Telephone Consultative Committee (9271040651 9789271040656 92-71-04065-1)
Plan General De Developpement Du Reseau Regional De L'Asie Et De L'Oceanie, 1990-1994: General Plan for the Development of the Regional Asian and Oceanian Network, 1990-1994 by International Telecommunication Union, Commission regionale du plan pour le developpement des reseaux des telecommunications en Asie et en Oceanie (9271040686 9789271040687 92-71-04068-6)
