Paperback
ISBN: 978-92-61-01861-0
ISBN-10: 92-61-01861-0
I.T.U ยท 1984
| See also: | ||
| 1983 | Paperback | Twenty-second report (Booklet / International Telecommunication Union) |
| 1982 | Paperback | Twenty-first report (Booklet / International Telecommunication Union) |