Mary Beth Lundgren Books

We sing the city

By Mary Beth Lundgren

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An ethnically mixed group of children describe all the wonderful diversity of the city where they live.

Seven scary monsters

By Mary Beth Lundgren

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At bedtime, a little boy vanquishes the seven monsters that inhabit his room and tells them not to come back.

Love, Sara

By Mary Beth Lundgren

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In a series of emails and journal entries Sara, a high school junior with a history of sexual abuse and foster home care, reveals her feelings about herself and two friends who are headed for destr...

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.