It takes one hour of preparation for each minute of presentation time. <blockquote><a href="http://www.quotecosmos.com/quotes/32237/view">It takes one hour of preparation for each minute of presentation time..</a></blockquote><br> <a href="http://www.quotecosmos.com/subjects/937/Presentation">Presentation</a><br> Quote from <a href="http://quotecosmos.com">Quote Cosmos</a>
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