Rhea Perlman Books

Otto Undercover 1: Born to Drive

By Rhea Perlman

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Otto Undercover 1: Born to Drive

By Rhea Perlman

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Otto Undercover 2: Canyon Catastrophe

By Rhea Perlman

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With the help of his aunts and his trusty racecar, undercover agent Otto Pillip sets out to stop a criminal from blowing up the Grand Canyon. Includes words spelled backwards, anagrams, and palindr...

Otto Undercover 2: Canyon Catastrophe

By Rhea Perlman

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Otto Undercover 3: Water Balloon Doom

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Otto Undercover 3: Water Balloon Doom

By Rhea Perlman

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Otto Pillip, kid racecar driver and undercover agent, embarks on a mission to stop the evil Pruneman, who is trying to hold the world's water supply hostage. Includes words spelled backwards, anagr...

Otto Undercover 4: Toxic Taffy Takeover

By Rhea Perlman

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Otto Undercover 4: Toxic Taffy Takeover

By Rhea Perlman

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Otto Undercover 5: The Brink of Ex-stink-tion

By Rhea Perlman

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Secret agent and kid race car driver Otto Pillip heads to Maasailand in Africa with his aunts to stop a skunky villain from spreading his evil stink juice throughout the land. Includes words spelle...

Otto Undercover 5: The Brink of Ex-stink-tion

By Rhea Perlman

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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.