The challenge of effective speaking

The challenge of effective speaking

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Manylion Llyfryddiaeth
Prif Awdur: Verderber, Rudolph F. (Awdur)
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Belmont, California Wadsworth Publishing Company [1988]
Rhifyn:Seventh edition.
Pynciau:
Public speaking.