Peter Fjagesund Books

The apocalyptic world of D.H. Lawrence

By Peter Fjagesund

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The Northern Utopia

By Peter Fjagesund, Ruth A. Symes, Peter Fjaagesund

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Knut Hamsun abroad

By Peter Fjagesund

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"This volume presents for the first time the fascinating story of Knut Hamsun's reception abroad. In a series of articles covering nine countries and two continents, new light is shed on a writer w...

Dream of the North

By Peter Fjagesund

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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.