Marc Leepson Books

Executive Fitness

By Marc Leepson, Winter

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Lafayette

By Marc Leepson, Wesley K. Clark

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"When Thomas Jefferson died on the Fourth of July 1826 - the nation's fiftieth birthday - he was more than $100,000 in debt. Forced to sell thousands of acres of his lands and nearly all of his fur...

Ballad of the Green Beret

By Marc Leepson

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The Vietnam War

By Marc Leepson, Michael Burgan

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Saving Monticello

By Marc Leepson

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Ballad of the Green Beret

By Marc Leepson

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What So Proudly We Hailed

By Marc Leepson

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Flag

By Marc Leepson, Nelson De Mille

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Desperate Engagement

By Marc Leepson

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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.