Fred Siegel Books

The Prince of the City

By Harry Siegel, Fred Siegel

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The revolt against the masses

By Frederick F. Siegel

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Discusses the history of modern American liberalism and how its roots were formed by a new class of politically self-conscious intellectuals in the 1920s who were trying to create a hierarchical so...

Revolt Against the Masses

By Fred Siegel

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Revolt Against the Masses

By Fred Siegel

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Revolt Against the Masses

By Fred Siegel

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Fall from Grace

By Fred Siegel

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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.