Joshua Doder Books

When Grk sniffs some succulent sausages, he can't resist following his nose and ends up on the other side of the world. He's in Australia, the land of surfing, sharks and the Red Jelly Gang, a ruth...

The Timetraveller s Guide to Saxon and Viking London Timetraveller s Guide

By Joshua Doder

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Time Traveler s Guide to Shakespeare s London

By Joshua Doder

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Grk auf heisser Spur in Australien

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Grk und die Pelotti Bande

By Joshua Doder

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Die Pelotti-Bande ist wieder auf freiem Fuß und erleichtert die Banken in Brasilien um ihr Bargeld. Sofort machen sich Tim und sein Hund Grk auf den Weg nach Südamerika, um der trickreichen Bande d...

Grk ist nicht zu fassen

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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.