The heroes of Olympus : the demigod diaries /Author: Riordan, Rick.
Publisher: New York : Disney/Hyperion Books,
Date: 2012. This title can be found in 131 Iowa libraries.
The Demigod diaries Format: [sound recording] /
Author: Riordan, Rick.
Publisher: New York Books On Tape, Inc.,
Date: p2012. This title can be found in 1 Iowa libraries.
The demigod diariesFormat: [sound recording] /
Author: Riordan, Rick.
Publisher: [New York] : Listening Library/Random House Audio,
Date: p2012. This title can be found in 9 Iowa libraries.
The mark of Athena [soundrecording].Format: [compact disc] /
Author: Riordan, Rick.
Publisher: [New York] : Listening Library,
Date: [2012] This title can be found in 40 Iowa libraries.
The son of NeptuneFormat: [sound recording] /
Author: Riordan, Rick.
Publisher: New York : Random House Audio/Listening Library,
Date: p2011. This title can be found in 4 Iowa libraries.
The son of Neptune /Author: Riordan, Rick.
Publisher: New York : Disney/Hyperion Books,
Date: 2013, c2011. This title can be found in 2 Iowa libraries.
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