Donald Gray Books

Chaplain to Mr.Speaker: Religious Life of the House of Commons

By Donald Gray

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Geotechnical Aspects of Landfill Design and Construction

By Xuede Qian

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Memorial Services Alcuin Liturgy Guides

By Donald Gray

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Pride and Prejudice

By Jane Austen, Mary Favret, Donald Gray

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The first edition of the novel (1813). Introductory materials and revised and expanded footnotes by Donald Gray and Mary A. Favret. Biographical portraits of Austen by family members and— new to...

Jesus

By Donald P. Gray, Donald Gray

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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.