John V. Petersen Books

Visual Foxpro 5 Enterprise Development

By Ron Talmage, John V. Petersen, Rod Paddock, Eric Ranft, Ron Talmage, John V. Petersen, Eric Ranft

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This book is a developer's handbook designed to take the intermediate to advanced level Visual FoxPro developer right to the heart of developing a real live application. It will teach the developer...

Hands On Vb5 For Web Development

By John V. Petersen, Richard Campbell, Rod Paddock

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Absolute Beginner'S Guide To Databases

By John V. Petersen, John Petersen

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[john V. Petersen]. Includes Index.

Absolute Beginner'S Guide To Databases

By John V. Petersen, John Petersen

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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.