Kathi Wagner Books

The Ultimate Jokiest Joking Joke Book Ever Written . . . No Joke

By Amanda Brack, Brian Boone, Kathi Wagner, May Roche

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The Mini Jokiest Joke Book

By Amanda Brack, Kathi Wagner

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The everything kids giant book of jokes riddles and brain teasers

By Michael Dahl

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Presents a collection of jokes, riddles, puzzles, and brain teasers, and provides tips about how to deliver the perfect punch line.

The Everything Kids Riddles Brain Teasers Book

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The Everything Kids' Bugs Book

By Kathi Wagner

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Explores the world of insects--where to find them, how to attract them, how to help them grow--and the characteristics of specific kinds of bugs from around the world. Includes related activities a...

The everything kids' riddles & brain teasers book

By Kathi Wagner

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Everything Kids Sharks Book

By Kathi Wagner, Obe Wagner

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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.