Koch, Ulrich Books

Dazzling Mazes: 50 Inventive Puzzles With Solutions

Average: 0.00, 0 Ratings

Famous German artist and designer offers a fabulous collection of convoluted constructions designed to dazzle the most practiced puzzlist. Includes op art effects, Escher-like illusions, various ar...

Weiss ich

By Koch Ulrich

Average: 0.00, 0 Ratings

Auf mir, auf dir

By Koch Ulrich

Average: 0.00, 0 Ratings

Spectacular Mazes

By Ulrich Koch

Average: 0.00, 0 Ratings

Der Tag verging wie eine Nacht ohne Schlaf

By Koch Ulrich

Average: 0.00, 0 Ratings

Lang ist ein kurzes Wort

By Koch Ulrich

Average: 0.00, 0 Ratings

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.