John Roper Books

Comprenez Bien
Comprenez Bien

By John Roper

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Les heros et les heroines de la Resistance
Bon Marche
Bon Marche

By John Roper

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Follow up French Made Simple Made Simple Books
Follow up French Made Simple Made Simple Books
Unfinished Peace
Unfinished Peace

By David Anderson, Theo Sommer, Leo Tindemans, John Roper, Simone Veil, Bronislaw Geremek, Lloyd Cutler

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The guns have fallen silent in the former Yugoslavia. But the Dayton truce has yet to become a lasting peace. Peace in the Balkans remain threatened not only by the possibility of a new war in Bosn...

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Wolverhampton as It Was As It Was
Franco British Defence Co Operation
The New Eastern Europe Chatham House Papers
New East Europe
New East Europe

By J.M.C Rollo, John Roper

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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.

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