Llwytho...
Electronic communications
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Printed Book |
| Iaith: | English |
| Cyhoeddwyd: |
New Delhi
Prentice-Hall of India
1989
|
| Rhifyn: | 3rd ed |
| Pynciau: |
UL
| Rhif Galw: |
621.39 ROD |
|---|---|
| Copi | Nid yw'r Statws Byw ar Gael |