Jostein Gaarder Books

The Solitaire Mystery

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In The Solitaire Mystery, Hans Thomas and his father set out on a car trip through Europe, from Norway to Greece - the birthplace of philosophy - in search of Hans Thomas's mother, who left them ma...

Sophie s world

By Jostein Gaarder

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Sophie s World Teacher s Guide A Novel about the History of Philosophy

By Jostein Gaarder

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Sophie s World

By Jostein Gaarder

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Sophie s world

By Jostein Gaarder

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A novel about the history of philosophy, that uses the life of a schoolgirl, Sophie, as a backdrop for a discussion of the meaning of life.

The Solitaire Mystery

By Jostein Gaarder

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Solitaire Mystery 6ct

By Jostein Gaarder

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El Castillo de Las Ranas

By Jostein Gaarder

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Through a glass, darkly.

By Jostein Gaarder

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Sophie s world

By Jostein Gaarder

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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.