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The sales of e-books are rising, and the sales of real books are dropping.
The percentage of Americans reading e-books grew from 16 percent to 23 percent this year, according to a Pew Internet Research Center survey.
Fewer Americans are reading "traditional" analog books, the survey reported. 67 percent of Americans read traditional books, down from 72 percent.
75 percent of Americans read any kind of book in 2012, down from 78 percent in 2011, the study reported.