Jude Watson Books

Star Wars Legacy of the Jedi Secrets of the Jedi

By Jude Watson

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The 39 Clues Book 4

By Jude Watson

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1 v. ; 20 cm

Beyond the grave

By Jude Watson

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Amy and Dan Cahill rush to Egypt to find the next clue. Is the message from their dead grandmother real? Does she really mean to help them? Amy and Dan, following a clue found in Book 3, explore E...

A King s Ransom The 39 Clues Cahills vs. Vespers 2

By Jude Watson

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After seven members of their family are kidnapped by an organization called the Vespers, Dan and Amy Cahill must race against time to track down an ancient map to pay as ransom to bring the hostage...

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.