Theo Engelen Books

Marriage and the Family in Eurasia

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Death at the opposite ends of the Eurasian continent

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"Historical demographers since Malthus have characterized the West-European and Chinese demographic regimes as systems under low and high pressure, respectively. This volume examines the operation...

Levenslopen in transformatie

By O. W. A. Boonstra, Th Engelen, Angelique Janssens

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Death at the opposite ends of the Eurasian continent

By Th Engelen

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"Historical demographers since Malthus have characterized the West-European and Chinese demographic regimes as systems under low and high pressure, respectively. This volume examines the operation...

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.