Trond Bjorli Books

Cosmopolitics of the Camera

By Kjetil Ansgar Jakobsen, Trond Erik Bjorli

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Wilse mitt Norge

By Anders Beer Wilse

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I 2015 er det 150 år siden Anders Beer Wilse ble født. For første gang er hans fantastiske norgesbilder samlet i en egen bok. Wilse. Mitt Norge er et stykke norgeshistorie i bilder, formidlet gjenn...

Norge i farger 1910

By Trond Bjorli

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Ar og dag

By Trond Bjorli

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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.