Carl Olav Gram Gjesdal Books

His Dark Materials: The Subtle Knife (Book 2)

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The spellbinding sequel to The Golden Compass, the modern fantasy classic that Entertainment Weekly named an "All-Time Greatest Novel" and Newsweek hailed as a "Top 100 Book of All Time," continues...

En bok om Bergen

By Carl Olav Gram Gjesdal

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En bok om det gamle Bergen

By Carl Olav Gram Gjesdal

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Omkring kunnskapens kastanjetre

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Mann og masker

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Byuniversitetet pa berget

By Carl Olav Gram Gjesdal

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BTS 100 ar

By Carl Olav Gram Gjesdal

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Et lite stykke Norges historie

By Carl Olav Gram Gjesdal

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Views from the University Hill

By Carl Olav Gram Gjesdal

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En bok om Bergen i mellomkrigstiden

By Carl Olav Gram Gjesdal

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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.