Walburga Krupp Books

Das Basler Ehepaar Annie und Oskar Müller-Widmann begann schon früh, expressionistische Kunst zu sammeln, und entdeckte gegen Ende der 1920er-Jahre auch die abstrakte Kunst für sich. Das Haus des P...

Sophie Taeuber Arp s Letters to Annie and Oskar Muller Widmann

By Simona Martinoli, Walburga Krupp, Fondazione Marguerite Fondazione Marguerite Arp

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Sophie Taeuber Arp Equilibre

By Walburga Krupp, Angelika Affentranger Kirchrath

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Hans Arp

By Jean Arp

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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.