Rick Riordan Books

The Throne of Fire

By Katherine Kellgren, Rick Riordan, Kevin R. Free

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At the reading of their grandmother's will, Dan and Amy Cahill are given the choice of receiving a million dollars or uncovering the 39 clues hidden around the world that will lead to the source of...

The Throne of Fire

By Katherine Kellgren, Rick Riordan, Kevin R. Free

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Rick Riordan s The Kane Chronicles

By Katherine Kellgren, Rick Riordan, Kevin R. Free

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The Sword of Summer

By Rick Riordan, Christopher Guetig

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The House of Hades

By Rick Riordan, Nick Chamian

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The Lightning Thief

By Rick Riordan, Jesse Bernstein

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The Lost Hero

By Rick Riordan, Joshua Swanson

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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.