Christa Unzner Books

Meredith returns, and her magic spells are as unpredictable as ever. Meredith accidentally utters the spell for uninvited guests, and--whoosh! --a little sorcerer with an insatiable appetite flies...

Meredith'S Mixed-Up Magic

By J. Alison James, Dorothea Lachner, Christa Unzner, C. Unzner, D Lackner

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Meredith returns, and her magic spells are as unpredictable as ever. Meredith accidentally utters the spell for uninvited guests, and--whoosh! --a little sorcerer with an insatiable appetite flies...

Nell & Fluffy

By Anne Liersch

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Nell loves the guinea pig she got for her sixth birthday until some of her classmates tell her she has a pet for babies.

Nell and Fluffy

By C. Unzner, A. Liersch

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Weekend with Grandmother

By Wolfram Hanel

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Tony's grandmother, whom he seldom gets to see, takes him on a weekend jaunt and proves to be a dynamic and resourceful companion.

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.