Sidney Lens Books

The labor wars: From the Molly Maguires to the sitdowns

By Sidney Lens

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The day before doomsday

By Sidney Lens

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The labor wars: from the Molly Maguires to the sitdowns.

By Sidney Lens

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A comprehensive look at the history of the American labor movement. Takes the reader from the Molly Maguires through Eugene Debs and the Pullman Strike, Big Bill Haywood and the Wobblies, and the 1...

Labor Wars

By S. Lens

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Working men

By Sidney Lens

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Strikemakers And Strikebreakers

By Sidney Lens

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Vietnam: A War on Two Fronts

By Sidney Lens

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A history of American involvement in the Vietnam War, including a discussion of the antiwar movement in the United States.

Poverty: yesterday and today.

By Sidney Lens

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Poverty

By Sidney Lens

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Poverty

By Sidney Lens

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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.