Mark H. Walker Books

Office 2004 for Macintosh: The Missing Manual

By Franklin Tessler, Mark H. Walker, Paul Berkowitz, Mark Holt Walker

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The Office 2004 for Mac: The Missing Manual delivers everything needed to master all four Office 2004 programs for Mac - Word, Excel, PowerPoint and Entourage.

Microsoft Office Visio 2003 Inside Out

By Mark H. Walker, Nanette Eaton

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Microsoft Office Visio 2007 Inside Out

By Mark H. Walker

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Real War

By Mark H. Walker, Walker Mark

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Stronghold Crusader Official Strategy Guide

By Rick Barba, Mark H. Walker

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Railroad tycoon 3 official strategy guide

By Mark H. Walker

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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.