Philip G. Dwyer Books

Napoleon and Europe

By Philip G. Dwyer

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Napoleon Path To Power 1769 1799 V. 1

By Philip Dwyer

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Napoleon

By PHILIP G. DWYER

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Citizen Emperor Napoleon in Power 1799 1815

By Philip Dwyer

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"In this second volume of Philip Dwyer's authoritative biography on one of history's most enthralling leaders, Napoleon, now 30, takes his position as head of the French state after the 1799 coup....

Theatres of violence

By Philip G. Dwyer, Lyndall Ryan

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Theatres of violence

By Philip G. Dwyer, Lyndall Ryan

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French Revolution and Napoleon

By Peter McPhee, Philip Dwyer

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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.