Eric Homberger Books

The Penguin Historical Atlas of North America

By Eric Homberger

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The Cambridge mind

By Eric Homberger

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Scenes from the life of a city

By Eric Homberger

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Glittering and glamorous, New York in the mid-nineteenth century was also plagued by political corruption, sanitation problems, and a growing gulf between rich and poor. In this book, Eric Homberge...

Scenes Life City

By Eric Homberger

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Mrs. Astor's New York: Money and Power in a Gilded Age

By Eric Homberger

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"Mrs. Astor, undisputed queen of New York society in the decades before the First World War, used her prestige to create a social aristocracy in the city; an invitation to one of her parties was a...

Mrs. Astor's New York: Money and Social Power in a Gilded Age

By Eric Homberger

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The Troubled face of biography

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American Writers and Radical Politics 1900 1939

By Eric Homberger

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John Reed and the Russian Revolution: Uncollected Articles, Letters, and Speeches on Russia, 1917-1920

By Eric Homberger, John Reed

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American writers and radical politics, 1900-39

By Eric Homberger

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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.