Dean Karnazes Books

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In the fall of 2006, Dean Karnazes, known as the "Lance Armstrong of the running world," took on the ultimate challenge: running 50 marathons in 50 states in 50 consecutive days. Dean set off in a...

Ultramarathon Man

By Dean Karnazes

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Ultramarathon man

By Dean Karnazes

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Karnazes is an ultramarathoner: a member of a small, elite, hard-core group of extreme athletes who race 100 miles and longer. They can run forty-eight hours and more without sleep. They can scale...

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By Dean Karnazes

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By Matt Fitzgerald, Dean Karnazes

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The Road to Sparta

By Dean Karnazes

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Run

By Dean Karnazes

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50 marathons 50 days

By Dean Karnazes

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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.