Matthew Jacob Books

What the great ate

By Matthew Jacob

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City Steps of Pittsburgh

By Matthew Jacob

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Globetrotter

By Mannie Jackson, Matthew Jacob, Mark Jacob

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How to Build Body Easily in 60 Days or Less

By Matthew Jacob

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What the Great Ate

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What was eating them? And vice versa. In What the Great Ate, Matthew and Mark Jacob have cooked up a bountiful sampling of the peculiar culinary likes, dislikes, habits, and attitudes of famous—...

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.