Ruth Plumly Thompson Books

Kabumpo in Oz

By Ruth Plumly Thompson, Taylor Anderson, L. Frank Baum

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Kabumpo in Oz

By Ruth Plumly Thompson

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Return to L. Frank Baum’s wonderful world of Oz with this illustrated children’s book series. Prince Pompadore is celebrating his eighteenth birthday when out of his birthday cake bursts a magic...

Ojo in Oz (Wonderful Oz Books, No 27)

By Ruth Plumly Thompson

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Return to L. Frank Baum’s wonderful world of Oz with this illustrated children’s book series. When Ojo, everyone’s favorite Munchkin boy, is kidnapped—first by gypsies and then by a roving robber...

Hungry Tiger of Oz the Wonderful Oz Books 20 Wonderful Oz Books

By Ruth Plumly Thompson

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Gnome King of Oz Histories of King Kelson

By Ruth Plumly Thompson

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The Royal Book of Oz

By Ruth Thompson

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Wizard of Oz Megapack

By Ruth Plumly Thompson

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Royal Book of Oz

By Ruth Plumly Thompson

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Royal Book of Oz

By Ruth Plumly Thompson

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Royal Book of Oz

By Ruth Plumly Thompson

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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.