Marian Ullen Books

En medeltida bildvarld

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The medieval church in Dädesjö in Småland is one of Sweden's foremost cultural monuments, also famous outside the country's borders for the well-preserved wooden roof and its unique paintings from...

Sodra Rada gamla kyrka och dess malningar

By Marian Ullen

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Den monastiska bildvarlden i Norden Foredrag vid det 10 e nordiska symposiet for ikonografiska studier i Vadstena 1986

By Nordiska Symposiet For Ikonografiska Studier 10th 1986 Vadstena Sweden

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Vederslovs och Danningelanda kyrkor

By Marian Ullen

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Vederslovs och Danningelanda kyrkor

By Marian Ullen

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Ostergotland

By Ingrid Sjostrom, Marian Ullen

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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.