Tom Sheldon Books

McGraw-Hill Encyclopedia of Networking Electronic Edition

By Tom Sheldon

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Microsoft Internet Information Server 4: the Complete Reference

By John Mueller

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Covers TCP/IP, ISAPI, MMC; ActiveX, MTS, OLE DB, DCOM. Includes configuring, monitoring, and troubleshooting and chapters on electronic commerce, security, and networking.

Upgrading Your HP Pavilion PC: The Official HP Guide

By Thomas Sheldon, Tom Sheldon

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Daily Mail Kakuro

By Thomas Sheldon

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The perfect gift for any sudoku puzzle master!The author of Sudoku Genius returns with 144 challenging new puzzles and a master class in the very most advanced and elegant solving methods. The logi...

Big Match Manager

By Thomas Sheldon

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Big Match Manager

By Tom Sheldon

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Internet security professional reference

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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.