Paul Gregory Books

Comparative economic systems

By Paul R. Gregory

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Greatest Moments in Golf

By Paul R. Gregory

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Behind the Facade of Stalin s Command Economy

By Paul R. Gregory

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"The opening of the once secret Soviet state and party archives in the early 1990s was an event of profound significance. Western scholars gained access to the same documents as had Soviet leaders,...

GREATEST MOMENTS IN GOLF

By Paul Gregory

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The Psychology of Chronic Fatigue Syndrome

By Paul Gregory

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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.