Meetings by telephone : a cost savings tool /

gan Ward, John Robert, 1929-
Cyhoeddwyd 1980

The Teleconferencing handbook : a guide to cost-effective communication /

Cyhoeddwyd 1982

Teleconferencing services and systems : a selective, annotated bibliography /

gan Sanchez, James Joseph
Cyhoeddwyd 1987

Teleconferencing : new media for business meetings /

gan Elton, M. C. J
Cyhoeddwyd 1982

The Teleconferencing resource book : a guide to applications and planning /

Cyhoeddwyd 1984