Incluye table of contents.

V.1 Lists of delegates.

Minutes of the meetings of the 17® Plenary Assembly.

Organisations of the C.C.I.F.

Recommendations covering letter and graphical symbols and systems of units.

List of questions,the study of which should be undertaken or continued in 1955,1956 and 1957.

Memberrship of Study Groups,Commites and Sub-Commites of the C.C.I.F.in 1955,1956 and 1957.

Chart showing the organization of the C.C.I.F.

V.2 Protection.

Part 1.- Recomendations ofthe C.C.I.F.concerning the protection of tephone lines and the constitution of telephone cable sheaths.

Part 2.- Various documents.

V.4 Recommandations and measurement concerning transmission quality.

Telephone Apparatus.

V.6 Operating and Tariffs.

Part 1- C.C.I.F.recommendations concerning international telephone operating and tariffs (Geneva,1954)

Part 2- Miscellaneus documentation.

V.7 Maintenance (Extract from Volume 3 of the C.C.I.F Green Book)