John R. Davis Books

Britain and the German Zollverein, 1848-66

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This study focuses on Britain's relations with the Zollverein - the German Customs Union - in its later period. It includes Britain's reaction to the plans for commercial unity drawn up at Frankfur...

Britain and the German Zollverein, 1848-66

By John R. Davis

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The Great Exhibition

By John R. Davis

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Grants for history

By John R. Davis

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Grants for history

By John R. Davis

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Grants for History

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Grants for History 2009

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Grants for History 2010

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Grants for History 2011

By Davis John R. Whitston Kerry Hall Valerie

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Common heritage

By John R. Davis, Sonja Schultheiss Heinz, Karina Urbach, Franz Bosbach, Oliver Walton

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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.