Garry Chapman Books

Sugar

By Garry Chapman

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Wheat

By Garry Chapman

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Wheat is a valuable agricultural commodity that forms an important part of our diet. It is found in bread, pasta, noodles, cakes, biscuits, cereals and many other foods that we eat every day.

World Commodities Oil Macmillan Library

By Garry Chapman

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Wheat

By Garry Chapman

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Wheat is a valuable agricultural commodity that forms an important part of our diet. It is found in bread, pasta, noodles, cakes, biscuits, cereals and many other foods that we eat every day.

Macmillan Book of Olympic Facts Macmillan Library

By Garry Chapman

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Coal

By Garry Chapman

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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.