Effective business and technical presentations managing your presentations by objectives and results.
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Reading, Mass.
Addison-Wesley Pub.
c1975.
|
| Rhifyn: | 2nd ed. |
| Pynciau: |