Otha Richard Sullivan Books

African American Inventors

By Otha Richard Sullivan

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Black Stars

By Otha Richard Sullivan

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African American Millionaires Black Stars

By Otha Richard Sullivan

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African American inventors

By Otha Richard Sullivan

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Profiles the lives of twenty-five African American inventors who made significant scientific contributions from the eighteenth century to modern times.

Black Stars

By Otha Richard Sullivan, James Haskins

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African American Millionaires

By Otha Richard Sullivan, James Haskins

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African American Inventors

By Otha Richard Sullivan, James Haskins

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African American Millionaires

By Otha Richard Sullivan

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African American Women Scientists and Inventors

By Otha Richard Sullivan, James Haskins

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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.