 The Blood of Olympus is a young adult novel written by an American author whose books have been translated into how many languages?
Rick Riordan: Richard Russell Riordan Jr. ( ; born June 5, 1964), better known as Rick Riordan, is an American author. Rick Riordan:  His books have been translated into 42 languages and sold more than 30 million copies in the US.
i don't know