Mastering public speaking how to prepare and deliver a successful speech or presentation
| Egile nagusia: | |
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| Formatua: | Liburua |
| Argitaratua: |
Hong Kong
Grolier International
c1998.
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| Edizioa: | 4th ed. |
| Saila: | Grolier business library
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| Gaiak: |