Herman Selderhuis Books

An international team of renowned scholars give an oversight of the history and theology of Reformed Orthodoxy (± 1550-1750). The renewed interest in this fascinating period in intellectual history...

Martin Luther: A Spiritual Biography

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This biography follows Martin Luther on his spiritual journey, revealing his dynamic personality, deep struggles, and durable faith—presenting him first and foremost as a man searching for God.

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.