Clara Hüsch Books

Happy Is Up, Sad Is Down

By Daniel Reinhardt, Diana Löffler, Clara Hüsch, Jö Hurtienne, Jörn Hurtienne

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We think, feel, and talk in metaphors.Why not use them for design?Feeling down? Cheer up! We use metaphors every day and often without being aware of it. Many metaphors are more than figures of spe...

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.

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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.