Mark Sufrin Books

Sun Stealers Defenders

By Jean Little, Mark Sufrin

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Dangerous Games Masters of the Universe

By Mark Sufrin

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Story of George Bush Our 41st President

By Mark Sufrin

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George Bush

By Mark Sufrin

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A biography of a man who has served the United States in many capacities, most currently as the forty-first President.

Surfing

By Mark Sufrin

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Describes the basic equipment and fundamental techniques of surfing including safety tips and a glossary of terms.

Payton

By Mark Sufrin

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A biography of the Chicago Bears fullback who broke the NFL record for career rushing yards in 1984.

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.