Facebook COO Sheryl Sandberg Promotes New Book At Barnes & Noble

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Attendees wait to hear Sheryl Sandberg, chief operating officer of... News PhotoAdult,Author,Barnes & Noble,Book,Bookstore,COO,Facebook,Finance,Horizontal,Image,North,North America,Occupation,Part Of,Sheryl Sandberg,Social Networking,Store,Talking,Technology,The Americas,USA,Waiting,WomenPhotographer Collection: Bloomberg 2013 BloombergAttendees wait to hear Sheryl Sandberg, chief operating officer of Facebook Inc., unseen, speak about her new book 'Lean In' at a Barnes & Noble Inc. store in New York, U.S., on Tuesday, March 12, 2013. Sandberg's book, released on March 11, advises women to get over their ambivalence about being ambitious, think big and take risks. Photographer: Peter Foley/Bloomberg via Getty Images