Douglas GRAY Books

The Canadian Guide to Will and Estate Planning: Everything You Need to Know Today to Protect Your Wealth and Your Family Tomorrow

By Douglas A. Gray

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Home Inc.: The Canadian Home-Based Business Guide

By Douglas A. Gray

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Home buying made easy

By Douglas A. Gray

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The Canadian Guide to Will and Estate Planning: Everything You Need to Know Today to Protect Your Wealth and Your Family Tomorrow

By John Budd Douglas Gray

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Middle English Studies: Presented to Norman Davis in Honour of His Seventieth Brithday

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The Oxford Companion to Chaucer

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"Nicknamed the Father of English Poetry, Geoffrey Chaucer has long inspired great writers, including Shakespeare. He continues to connect with contemporary audiences through his surprisingly modern...

From Anglo-Saxon to Early Middle English: Studies Presented to E. G. Stanley

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From Anglo-Saxon to Early Middle English brings together eleven papers on aspects of English language and literature from the eighth to the thirteenth century, written in honour of E. G. Stanley, t...

Middle English Literature 1100-1400

By J. A. W. Bennett

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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.