Mark Jacob Books

Wrigley Field: A Celebration of the Friendly Confines
Chicago under Glass: Early Photographs from the Chicago Daily News
The Game That Was
The Game That Was

By Richard Cahan, Mark Jacob

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The Game That Was
The Game That Was

By Richard Cahan, Mark Jacob

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10 things you might not know about nearly everything
10 things you might not know about nearly everything

By Mark Jacob

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"A collection of articles from the Chicago Tribune's '10 Things You Might Not Know' column"--

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10 things you might not know about nearly everything
10 things you might not know about nearly everything

By Mark Jacob

Average: 0.00, 0 Ratings

"A collection of articles from the Chicago Tribune's '10 Things You Might Not Know' column"--

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What s the Story Boring Glory
Treacherous beauty
Treacherous beauty

By Mark Jacob

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Treacherous Beauty
Treacherous Beauty

By Mark Jacob, Stephen Case

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Treacherous Beauty

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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.

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