Michael Twinn Books

Dolphin Book Buddy

By Michael Twinn

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Fox Book Buddy

By Michael Twinn

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Dear Santa

By Michael Twinn, Patricia D. Ludlow

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Just when he thinks Christmas has lost its meaning, Santa gets a letter from a group of concerned children and begins working with others to make the world a better place.

Hazel s Healthy Halloween

By Michael Twinn

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Bully for You Life Skills and Responsibility

By Michael Twinn

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War and Peace Life Skills and Responsibility

By Michael Twinn

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Pocket Lion

By Michael Twinn

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Pocket Tiger

By Michael Twinn

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Helpful Shoelace Who Cares About

By Michael Twinn

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Left at loose ends when his partner breaks, a shoelace finds many ways to help around the castle and, in the process, teaches the reader how to lace and tie a shoe.

Pocket Elephant

By Michael Twinn

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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.