Joan Holub Books

Backwards day

By Joan Holub

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Everything in school is reversed on backwards day, from reading books back to front to saying "stop" instead of "go."

The pizza that we made

By Joan Holub

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Three young cooks have fun making their own pizza, cleaning up their mess, and eating hot slices!

Tatiana comes to America

By Joan Holub

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Sisters Lila and Rose are spending the year with their eccentric grandmother, who runs a doll hospital. The girls are not pleased with the arrangement, but they begin to enjoy themselves when they...

Saving Marissa Doll Hospital Book 4

By Joan Holub, Cheryl Kirk Noll

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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.

Joan Holub Books

Jumpstart Pre k Early Reader

Backwards day

Eek a Boo

The garden that we grew

The pizza that we made

Silly Bears

Tatiana comes to America

Glory's freedom

Saving Marissa Doll Hospital Book 4

Danielle's dollhouse wish

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?