Jeff Sinclair Books

Little giant book of after school fun

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A collection of amusements and things to do alone or with friends after school, including optical illusions, puzzlers, mysteries, crosswords, word search puzzles, thinking games, mindreading tricks...

Find It

By Jeff Sinclair

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Wacky Canada

By Jeff Sinclair

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48 p. : 28 cm

Connais Tu Le Canada

By Jeff Sinclair

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Jeux pour un Canada vert

By Jeff Sinclair

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Charades, devinettes, questionnaires, jeux de mémoire, casse-tête, mots croisés, labyrinthes et autres activités ludiques composent ce livre-jeu conçu pour sensibiliser les enfants à diverses probl...

Go Green Canada

By Jeff Sinclair

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Awesome Riddle Book

By Morrie Gallant

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Picture Puzzle Adventures

By Jeff Sinclair

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The Civil War

By Elizabeth Elias Kaufman

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Best riddle book ever

By Charles Keller

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A collection of over 500 riddles on many different subjects.

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.