Bill Cotter Books

Chicago s 1933 34 World s Fair A Century of Progress

By Bill Cotter

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Don t Push the Button A Christmas Adventure

By Bill Cotter

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Hello airplane

By Bill Cotter

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Illustrations and easy-to-read text follow an airplane as it says good-bye to the ground and hello to the sky, where it flies over a town, mountains, clouds, and people.

Don t Push the Button A Halloween Treat

By Bill Cotter

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Don t Push the Button An Easter Surprise

By Bill Cotter

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Little face big face

By Bill Cotter

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Little face, big face Chewing on a twig face! Short face, long face Super-duper STRONG face!Faces can communicate a lot of things! Explore how much you can learn about an animal by looking at it's...

1939 1940 New York World s Fair

By Bill Cotter

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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.