Tonke Dragt Books

The Letter for the King and The Secrets of the Wild Wood Hardback Gift Set

By Tonke Dragt

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The Secrets of the Wild Wood

By Tonke Dragt

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A stunning gift edition of the Sunday Times and Telegraph Children’s Book of the Year—the “action-packed” sequel to The Letter for the King (Daily Mail) Young Sir Tiuri se...

Goldsmith and the Master Thief

By Tonke Dragt

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The Goldsmith and the Master Thief

By Tonke Dragt

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The first English translation of a classic adventure involving two very different twins by the celebrated author of The Letter for the KingLaurenzo and Jiacomo are identical twins, as alike as two...

Das Geheimnis des Uhrmachers oder die Zeit wird es lehren oder die Zeit wird es dich lehren.

By Tonke Dragt

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Tigeraugen. Ein Zukunftsroman.

By Tonke Dragt

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Der Roboter vom Flohmarkt. Route Z. Zwei Zukunftsgeschichten.

By Tonke Dragt

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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.