David R. Portney Audio Books

David R. Portney has been doing training sessions, keynote speeches, seminars, and every kind of public speaking you can imagine for over twenty years. He has conducted training and talks for major companies such as the National Notary Association, the Learning Annex, and the Los Angeles Times.

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Conquering Stage Fright and Fear Of Public Speaking Audiobook, by David R. Portney

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David R. Portney Audio Books

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