Charles P. Roland Books

An American Iliad

By Charles Pierce Roland

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Jefferson Davis's greatest general

By Charles Pierce Roland

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"To Confederate President Jefferson Davis, America had no finer soldier than Kentucky-born Texan Albert Sidney Johnston. Following the outbreak of the Civil War, Davis turned to Johnston to take co...

Albert Sidney Johnston

By Charles P. Roland

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Reflections on Lee

By Charles P. Roland

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Albert Sidney Johnston

By Charles P. Roland

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Albert Sidney Johnston

By Charles P. Roland

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Improbable Era

By Charles P. Roland

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Improbable Era

By Charles P. Roland

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History Teaches Us to Hope

By Charles P. Roland

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History Teaches Us to Hope

By Charles P. Roland

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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.