Facebook COO Sheryl Sandberg Promotes New Book At Barnes & Noble

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Sheryl Sandberg, chief operating officer of Facebook Inc., right, and... News PhotoAdult,Author,Barnes & Noble,Book,Bookstore,COO,Chelsea Clinton,Facebook,Females,Finance,Former,Horizontal,Image,North,North America,Occupation,People,Photography,Portrait,Sheryl Sandberg,Social Networking,Store,Technology,The Americas,Two People,USA,WomenPhotographer Collection: Bloomberg 2013 BloombergSheryl Sandberg, chief operating officer of Facebook Inc., right, and Chelsea Clinton, daughter of former U.S. President Bill Clinton, pose for photographs with Sandberg's 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