Karin Ruhrdanz Books

Stories of the Prophets

By Rachel Milstein, Karin Ruhrdanz, Barbara Schmitz

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"This volume presents a detailed iconographic and stylistic study of a group of profusely illustrated manuscripts, from 1570's-80's. This group comprises 21 copies of three Persian texts, all entit...

The Endless Enigma

By Claudia Dichter, Elisabeth Bronfen, Jean Hubert Martin, Stephan Andreae, Dawn Ades, Karin Ruhrdanz

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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.