Bob Graham Books

Pete and Roland

By Peter Smith, Bob Graham

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A budgie strays into a small boy's life for a little while--and then goes off to other adventures.

Pearl's Place Picture Lions S.

By Bob Graham

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First There Was Frances

By Bob Graham

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Frances lives alone in plenty of space at the edge of the city, but is joined, one at a time, by so many other people and animals that they all move to the country.

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.

Bob Graham Books

Pete and Roland

Crusher is coming.

Pete and Roland

Jenny's baby brother

Pearl's Place Picture Lions S.

Libby Oscar and Me

First There Was Frances

The Wild

Crusher is Coming

First There Was Frances

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?