Daniel E. Harmon Books

Careers as a marketing and public relations specialist

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Describes the career paths of marketing and public relations specialists, discussing necessary qualifications, education requirements, and available job opportunities.

Werewolves

By Daniel E Harmon

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Producing in Theater

By Daniel E. Harmon

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21st Century Surveillance Technologies

By Daniel E. Harmon

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Tsunamis

By Daniel E Harmon

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Tsunamis

By Daniel E Harmon

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What Are Calories

By Daniel E Harmon

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Martin Luther

By Dan Harmon, Edwin Prince Booth

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Life s Little Handbook of Wisdom

By Bickel

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The Ultimate Joke Book Hundreds of Great Clean Jokes

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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.