John Walkenbach Books

Excel 2007 Charts Mr. Spreadsheet s Bookshelf
Excel 2007 Power Programming with VBA Mr. Spreadsheet s Bookshelf
Excel 2007 Formulas Mr. Spreadsheet s Bookshelf
Excel 2007 Bible
Excel 2007 Bible

By John Walkenbach

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Excel 2007 for dummies quick reference
Excel 2007 VBA programming for dummies
Excel 2007 VBA programming for dummies

By Jan Karel Pieterse, John Walkenbach

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Presents information on using Microsoft's Visual Basic for Applications (VBA) programming language to customize the spreadsheet program Excel

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Office 2007 Bible
John Walkenbach s Favorite Excel 2007 Tips Tricks Mr. Spreadsheet s Bookshelf
Office 2007 Library
Excel 2010 Bible
Excel 2010 Bible

By John Walkenbach

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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.

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