John F. V. Keiger Books

France and the Origins of the First World War

By John F. V. Keiger

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France and the origins of the First World War

By John F. V. Keiger

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France and the origins of the First World War

By John F. V. Keiger

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France and the world since 1870

By John F. V. Keiger

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"This is the first study in English to chart France's relations with the rest of the world over the whole of the twentieth century. Those relations are characterized by remarkable degrees of contin...

France and the world since 1870

By John F. V. Keiger

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Raymond Poincare

By J. F. V. Keiger, John F. V. Keiger

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In a career which ran from the 1880s to the 1930s, one of the most formative periods of modern French history, Poincare held the principal offices of state. He played crucial roles in France's entr...

France and the Origins of the First World War

By John F. V. Keiger

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Raymond Poincare

By John F. V. Keiger

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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.