Jorgen Hegner Christiansen Books

De byggede Danmark

By Jorgen Hegner Christiansen

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Et Kobenhavnsk bybillede

By Jorgen Hegner Christiansen

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Dansk betonarkitektur

By Jorgen Hegner Christiansen

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Beton betragtes af mange som indbegrebet af det moderne byggemateriale, men som alt moderne mødes betonen med sammensatte følelser. Betonen kan formes frit, den kan præstere næsten alt, den er stær...

Bygningsbevaring

By Jorgen Hegner Christiansen

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Zoologisk have

By Jorgen Hegner Christiansen

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The book about Copenhagen's Zoo is the story of the animals' homes through the ages and the thoughts behind it. The changing times' views on animals and animal welfare in captivity are reflected in...

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.