Rudolf Abraham Books

National Geographic Traveler: Croatia, 2nd Edition

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Experience Croatia's hot spots and lesser-known destinations—from central Croatia's castles to the Dalamatian Coast's beaches and islands to mouth-watering food markets and small boutiques al...

Berlitz Montenegro Pocket Guide

By Berlitz Author

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Alpe Adria trail

By Rudolf Abraham

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Croatia

By Piers Letcher

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Montenegro

By Annalisa Rellie

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Walking in Croatia

By Rudolf Abraham

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The Mountains of Montenegro

By Rudolf Abraham

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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.