Irwin Unger Books

These United States: The Questions of Our Past, Concise Edition, Volume 2

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These United States: The Questions of Our Past, Concise Edition, Volume 1

By Irwin Unger

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American Issues: A Primary Source Reader in United States History, Volume 1

By Irwin Unger

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Postwar America

By Debi Unger, Irwin Unger

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The Best of Intentions: The Triumphs and Failures of the Great Society Under Kennedy, Johnson, and Nixon

By Irwin Unger

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The Best of Intentions explores the politics, the people, and the ins and outs of the Great Society programs - and how, inevitably, they began to go awry. Beginning with the Kennedy administration'...

The movement

By Irwin Unger

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The movement

By Irwin Unger

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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.