Marieka Heinlen Books

With toddlers, yelling, screaming, wailing, and flailing are a normal part of life. Very young children don't yet have the words to express strong feelings, and they're still learning social skills.

Try Again Time

By Marieka Heinlen, Elizabeth Verdick

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Waiting Is Not Forever La espera no dura para siempre

By Marieka Heinlen, Elizabeth Verdick

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Waiting Is Not Forever La espera no dura para siempre

By Marieka Heinlen, Elizabeth Verdick

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Feet are Not for Kicking

By Marieka Heinlen, Elizabeth Verdick

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On Ne Crie Pas

By Marieka Heinlen, Elizabeth Verdick

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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.