Carolyn Nystrom Books

Ten-year-old Mike experiences feelings of confusion, guilt, fear, and anger when his parents get a divorce. Includes pages of factual information and notes from a Christian perspective.

Mario's big question

By Carolyn Nystrom

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Adopted Mario tries to understand who he is, how he should relate to his birth and adoptive parents, and how he fits into his family.

Andy's big question

By Carolyn Nystrom

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Jenny and grandpa

By Carolyn Nystrom

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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.