(DOC) Ban buon va ban le | Andy Chau - Academia.edu- bán buôn bộ ppt senitazer ,Academia.edu is a platform for academics to share research papers.Ban PowerPoint! - The WeekOct 16, 2014·Ban PowerPoint! October 16, 2014. No more. (AP Photo/Lefteris Pitarakis) PowerPoint just might be the single biggest drag on productivity and clear thinking in corporate America today.