Roger Kaplan Books

Freedom in the World 1998 1999

By Roger Kaplan

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Conservative Socialism

By Roger Kaplan

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"This work on the decline of French radicalism was conceived after the fall of the Berlin Wall as an essay on the decline and decay of the revolutionary idea in European politics. The theme provide...

Freedom in the World

By Adrian Karatnycky

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Freedom in the World

By Roger Kaplan

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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.