Jeffrey Marx Books

The Long Snapper: A Second Chance, a Super Bowl, a Lesson for Life

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Chronicles the improbable and inspirational journey of Brian Kinchen, a family man and Bible school teacher three years retired from the NFL who was recalled to play for the New England Patriots in...

The Long Snapper: A Second Chance, a Super Bowl, a Lesson for Life

By Jeffrey Marx

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Inside Track: My Professional Life in Amateur Track and Field

By Carl Lewis, Jeffrey Marx

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2004 Physics Education Research Conference AIP Conference Proceedings

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Season of life

By Jeffrey Marx

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"Joe Ehrmann, a former NFL football star and volunteer coach for the Gilman high school football team ... devotes his life to teaching young men a whole new meaning of masculinity. He teaches the b...

Inside track

By Carl Lewis

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One More Victory Lap

By Carl Lewis

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Season of Life

By Jeffrey Marx

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Long Snapper

By Jeffrey Marx

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The Long Snapper

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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.