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timothy j koegel
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The exceptional presenter goes virtual
Timothy J. Koegel · Greenleaf Book Group Press
178 sayfa · 2010
Computer network resources / Business presentations / Internet videoconferencing / Business communication / Computer conferencing
Shang ye & zhong yao chang he de da jia fen shuo hua shu
Timothy J. Koegel · Da yan wen hua shi ye gu fen you xian gong si fa xing
240 sayfa · 2012
Business presentations