Helen L. Wilbur Books

M Is for Meow

By Helen L. Wilbur

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Z Is for Zeus

By Helen L. Wilbur

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"An A to Z introduction to Greek mythology including heros, gods and goddesses, the Iliad, Dephi, and Labyrinth. Each topic is introduced with a poem and includes detailed-filled expository text"--...

A tuba Christmas

By Helen L. Wilbur

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When Ava decides to learn to play the tuba, it isn't as easy as she thought. And some of the kids make fun of her. But with the encouragement of her music teacher, Ava finds a place for her and her...

Lily s Victory Garden

By Robert Gantt Steele, Helen L. Wilbur

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E Is for Eiffel Tower

By Helen L. Wilbur, Yan Nascimbene

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F Is for Friendship

By Helen L. Wilbur, Gijsbert Van Frankenhuyzen

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Finnegan and Fox

By Helen L. Wilbur

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E Is for Eiffel Tower

By Helen L. Wilbur, Yan Nascimbene

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F Is for Friendship

By Helen L. Wilbur, Gijsbert Van Frankenhuyzen

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E Is for Eiffel Tower

By Helen L. Wilbur, Yan Nascimbene

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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.