David Wagner Books

Hands-On Biology: Introductory

By Theodore L. Taigen, David Wagner, Eileen Jokinen, Thomas Terry

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Hauptstadtbuch

By Barbara Bollwahn, Jorg Sundermeier, Werner Labisch

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The Twofish Encryption Algorithm

By David Wagner, Niels Ferguson, John Kelsey, Chris Hall, Doug Whiting, Bruce Schneier

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Nocturnal Berlin

By David Wagner, Ingo Van Aaren

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Trailing his pet turtle, a writer stumbles out into nighttime Berlin. The photographer Ingo van Aaren (b. 1973; lives and works in Berlin) shadows the unequal pair on their rambles, capturing them...

"David Wagner führt kreuz und quer durch Berlin: die Kastanienallee, die Kurfürstenstraße und die Kantstraße hinauf und hinunter, durch Flughäfen und Malls, er besichtigt Autobombensperren am Bikin...

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.