Paul R. Gregory Books

Macroeconomics

By Roy J. Ruffin

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Before Command

By Paul R. Gregory

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Before Command

By Paul R. Gregory

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Women of the Gulag

By Paul R. Gregory

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"During the course of three decades, Joseph Stalin's Gulag, a vast network of forced labor camps and settlements, held many millions of prisoners. People in every corner of the Soviet Union lived i...

Women of the Gulag

By Paul R. Gregory

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Women of the Gulag

By Paul R. Gregory

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Women of the Gulag

By Paul R. Gregory

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Behind the Facade of Stalin s Command Economy

By Paul Gregory

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Behind the Facade of Stalin s Command Economy

By Paul Gregory

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Economics of Forced Labor

By Valery Lazarev, Paul R. 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.