Mari Hvattum Books

Gottfried Semper and the Problem of Historicism

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Gottfried Semper and the Problem of Historicism

By Mari Hvattum

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I slutten av mai 1845 dukket det opp en liten annonse i Morgenbladet der Nationalmuseet søkte etter lokaler: '4 til 6 rummelige, tørre og gode Værelser i et bekvemt beliggende Huus i den bedre Deel...

Vor tids fordringer

By Mari Hvattum, Mari Lending

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Heinrich Ernst Schirmer

By Mari Hvattum

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Debatten om Stortingsbygningen 1836 1866

By Mari Hvattum

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An eye for place

By Karl Otto Ellefsen, Mari Hvattum, Gro Lauvland

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Hva er arkitektur

By Mari Hvattum

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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.