Mark Allen Books

Working With DOS 6
Working With DOS 6

By Allen Mark

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Working With DOS
Working With DOS

By Allen Mark

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Working with DOS 5
Working with DOS 5

By Allen Mark

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Working With Dos Book and Disk
Working With Dos Book and Disk
The complete poetry and prose of Geoffrey Chaucer
Data Structures and Algorithm Analysis in C
Workouts for working people
Workouts for working people

By Julie Moss, Allen Mark, Mark Allen

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If you have demands on your time, like a job and a family, but want to have a great body, this book is for you. In Workouts For Working People, Ironman legends Mark Allen and Julie Moss bring you t...

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Spider Matrix
Spider Matrix

By Mark Allen M.D. Rosen

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Annotated Chaucer bibliography

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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.

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