Jornadas Técnicas Internacionales de Telecomunicación, Barcelona, 11-15 noviembre 1974.
Contributors: Compañía Telefónica Nacional de España.
Publisher: Compañía Telefónica Nacional de España
Published: 1975
Place of publication: [Madrid]
Language: spa
Number of pages: 252
Subjects: Telecommunication -- Congresses.
Notes: At head of title: 50.