Rick Riordan Books

The Heroes of Olympus Paperback 3 Book Boxed Set

By Rick Riordan

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Percy Jackson and the Olympians 3 Book Paperback Boxed Set with new covers

By Rick Riordan, John Rocco

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The Blood Olympus heroes of Olympus Series

By Rick Riordan

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Heroes of Olympus, The, Book Two: Son of Neptune, The: The Graphic Novel-The Heroes of Olympus, Book Two

By Rick Riordan

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Magic, monsters, and mayhem abound when Percy Jackson and Annabeth Chase meet Carter and Sadie Kane for the first time. Weird creatures are appearing in unexpected places, and the demigods and magi...

The Lightning Thief

By Rick Riordan

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Hidden Oracle, The-Trials of Apollo, Book One

By Rick Riordan

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The Tower of Nero-Trials of Apollo, The Book Five

By Rick Riordan

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The Trials of Apollo Book One The Hidden Oracle

By Rick Riordan, John Rocco

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.