New York (CNN Business) Special counsel Robert Mueller can add "best selling author" to his long list of accomplishments.

The report is also No. 11 on the combined print and e-book list . That's because there are several versions available for sale. Yes, people are buying print copies of the report, even though it's available for free on the web and on e-readers.

The version of "The Mueller Report" produced by The Washington Post and Scribner, with analysis by Post reporters and editors, ranked No. 1 in terms of sales last week, according to The Times.

A different version produced by Skyhorse Publishing, featuring a critical introduction by lawyer Alan Dershowitz, ranked No. 11.

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