Roy Books

New Assignments and Practice Scores
New Assignments and Practice Scores

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Islam and Resistance in Afghanistan
Islam and Resistance in Afghanistan
Islam and Resistance in Afghanistan

By Roy

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Avalanche
Avalanche

By Ron Roy, Roy

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Upset over his parent's impending divorce, fourteen-year-old Scott goes to visit his brother in Colorado where they are both nearly buried by an avalanche.

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July jitters
July jitters

By Ron Roy

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Bradley, Brian, Nate, and Lucy enter Polly the pony and Pal the dog in a July 4th pet costume contest, but when Independence Day arrives the animals are nowhere to be found.

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Saint Nicholas I
Saint Nicholas I

By Jules Roy

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Play Jazztime Violin
Love Your Canary
Love Your Canary

By Roy Stringer

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The Beggar's opera
The Beggar's opera

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Sir Cedric.
Sir Cedric.

By Roy Gerrard

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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.

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