Hans Von Campenhausen Books

"Hans von Campenhausen's two volumes, The Fathers of the Greek Church and The Fathers of the Latin Church, are combined into one volume in this new edition. "The Fathers of the Church" traditionall...

The Virgin Birth in the Theology of the Ancient Church

By Hans Von Campenhausen

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Les Peres grecs

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Urchristliches und Altkirchliches

By Campenhausen Hans Freiherr Von

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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.