Holden Robert Books

It is all too common a belief that in order to be happy one must earn, deserve, work, and pay for it--that happiness is for tomorrow, while today is for well-behaved hardship, martyrdom, and quiet...

Shift Happens

By Robert Holden Ph.D.

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Two caterpillars were crawling along a tree branch one day when a butterfly flew overhead. One caterpillar said to the other, "You will never get me up in one of those things." Shift Happens! i...

Australian limited edition art books

By Holden Robert

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Photography in colonial Australia

By Holden Robert

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Vandaag nog gelukkig zijn

By Holden Robert

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Inteligencia del exito

By Holden Robert

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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.