J. K. Rowling’s ‘Harry Potter’ series
At least 450 million copies of the phenomenal Harry Potter books written by J.K. Rowling have been sold as of 2013.
The seven-volume novel series has been translated to more than 70 languages since the publication of its first book, “Harry Potter and the Philosopher’s Stone,” in 1997. Kathleen de Villa, Inquirer Research
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