Helmut Engelmann Books

Die Inschriften von Erythrai und Klazomenai.

By Helmut Engelmann

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Die Inschriften von Metropolis

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Romische Kunst in Spatantike und fruhem Christentum bis Justinian

By Josef Engemann

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Die Kunst des frühen Christentums entwickelte sich als Teil der allgemeinen materiellen Kultur der Spätantike.0Neue religiöse Inhalte und Aufgaben verbanden sich mit Aspekten des römischen Erbes zu...

Philologica

By Wolfgang Blumel, Barbel Kramer, Helmut Engelmann, Johannes Kramer, Reinhold Merkelbach

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Philologica

By Wolfgang Blumel, Barbel Kramer, Helmut Engelmann, Johannes Kramer, Reinhold Merkelbach

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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.