Mary Jo Pehl Books

The Mystery Science Theater 3000 Amazing Colossal Episode Guide

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What is the mystery of Mystery Science Theater 3000?You may have asked yourself, "What the heck are these talking shadows doing in the corner of my TV screen, riffing away with plucky--and hilariou...

Employee of The Month And Other Big Deals

By Mary Jo Pehl

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Jailbait

By Darren G Davis, Cw Cooke, Mary Jo Pehl

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Dumb Dumb Dumb

By Mary Jo Pehl

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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.