Michael Cottman Books

Million Man March

By Michael Cottman

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Wreck of the Henrietta Marie The

By Michael Cottman, Michael H. Cottman

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When prize-winning journalist and avid scuba diver Michael Cottman participated in an underwater expedition to survey the sunken wreck of a slave ship off the coast of Florida, he was overwhelmed b...

Million man march

By Michael H. Cottman

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Family of Black America The

By Michael Cottman

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Spirit Dive

By Michael Cottman

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Shackles From the Deep

By Michael H. Cottman

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A pile of lime-encrusted shackles discovered on the seafloor in the remains of a ship called the Henrietta Marie, lands Michael Cottman, a Washington, D.C.-based journalist and avid scuba diver, in...

The Family of Black America

By Michael Cottman

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Segregated Skies

By Michael H. Cottman

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Segregated Skies

By Michael H. Cottman

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Shackles from the Deep

By Michael Cottman

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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.