John Ficarra Books

The Mad book of fears and phobias

By John Ficarra

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Mad About the Oscars

By The Usual Gang Of Idiots

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The Mad War on Bush Mad

By The Usual Gang Of Idiots

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Mad for Decades

By The Usual Gang Of Idiots

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MAD about super heroes

By Dave Gibbons, John Ficarra

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Collection of parodies from Mad magazine about Superman, Spiderman, and others.

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.