Lisa Holewa Books

Milwaukee Massacre

By Robert J. Dvorchak, Lisa Holewa

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What Kindergarten Teachers Know

By Lisa Holewa

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A kindergarten teacher's ability to guide children through an entire day of activities does not happen by accident. There are secrets teachers know about our kids that let them calmly and graceful...

Dr. Jen s guide to breastfeeding

By Jennifer Thomas

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Hacer Peliculas en Tecnicolor

By Smithsonian Institution Staff, Lisa Holewa

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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.