Jasper Von Altenbockum Books

Wilhelm Heinrich Riehl 1823-1897

By Jasper Von Altenbockum

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Kennedy in Berlin 50th anniversary

By Hans Michael Koetzle, Jasper Von Altenbockum, Ulrich Mack, Egon Bahr

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"Few events from recent German history are so deeply engraved in the country's collective memory as John F. Kennedy's visit in 1963. At the behest of the illustrated magazine Quick, the Hamburg pho...

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.