Bertil Wennergren Books

Plena manlibro de Esperanta gramatiko

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The long-awaited successor to the Plena Gramatiko de Esperanto, this book is aimed at ordinary Esperanto speakers who want to study the language's grammar, word-building system, writing and pronunc...

Handlaggning.

By Bertil Wennergren

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Handlaggning.

By Bertil Wennergren

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I statens tjanst

By Bertil Wennergren

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I statens tjanst

By Bertil Wennergren

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Forvaltningsprocess

By Bertil Wennergren

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Pliktexemplar av skrift.

By Bertil Wennergren

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Handlaggning

By Bertil Wennergren

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Handlaggning

By Bertil Wennergren

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Handlaggning

By Bertil Wennergren

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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.