Gregory J. Perry Books

Graphics And Sound On The Commodore 64

By Gregory J. Perry

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Graphics & Sound On The Commodore 64

By Gregory J. Perry, Greg M. Perry

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Absolute Beginner'S Guide To C

By Gregory J. Perry, Greg M. Perry, Greg Perry

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"For beginning programmers, this updated edition answers all C programming questions. This bestseller talks to readers at their level, explaining every aspect of how to get started and learn the C...

Absolute Beginner'S Guide To C

By Gregory J. Perry, Greg Perry

Average: 0.00, 0 Ratings

"For beginning programmers, this updated edition answers all C programming questions. This bestseller talks to readers at their level, explaining every aspect of how to get started and learn the C...

Absolute Beginner'S Guide To C, Portable Documents

By Gregory J. Perry, Greg Perry

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"For beginning programmers, this updated edition answers all C programming questions. This bestseller talks to readers at their level, explaining every aspect of how to get started and learn the C...

Graphics and Sound on the Commodore 64

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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.