Craig Schaefer Books

Down among the Dead Men

By Craig Schaefer

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Wise Men of Gotham

By Craig Schaefer

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The Wise Men of Gotham

By Craig Schaefer

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The Hungry Dreaming

By Craig Schaefer

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Las Vegas, Stadt der Sünde – und der Dämonen, wie Daniel Faust, Gangster und Magier, nur allzu gut weiß. Als er angeheuert wird, um Rache an den Mördern einer jungen Frau zu nehmen, gerät Daniel in...

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.