John Mark Dempsey Books

Sports talk Radio in America

By John Mark Dempsey

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Sports talk Radio in America

By John Mark Dempsey

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Eddie Barker s Notebook

By John Mark Dempsey, Eddie Barker

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The Light Crust Doughboys Are on the Air

By John Mark Dempsey

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"Millions of Texans and Southwesterners have been touched over the years by the Light Crust Doughboys. From 1930 to 1952, fans faithfully tuned in to their early-morning and, later, noontime radio...

Sports Talk Radio in America

By Jack M. Dempsey, Frank Hoffmann, Martin J. Manning

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Sports Talk Radio in America

By Jack M. Dempsey, Frank Hoffmann, Martin J. Manning

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Light Crust Doughboys Are on the Air

By John Mark Dempsey

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Sports Talk Radio in America

By Jack M. Dempsey, Frank Hoffmann, Martin J. Manning

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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.