Michele Spirn Books

Some people think the best ride at an amusement park is the roller coaster. It is certainly one of the scariest. Did you ever wonder about the first roller coasters? This book tells you about them.

The Know-Nothings

By Michele Spirn

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Four friends called The Know-Nothings, because they don't know very much, decide to make lunch.

A Know-Nothing Birthday

By Michele Spirn

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Four foolish friends called The Know-Nothings have a birthday celebration.

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.