Mark J. Harasymiw Books

Matematicas en el Sol Math on the Sun

By Mark J. Harasymiw

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Matematicas en Jupiter Math on Jupiter

By Mark J. Harasymiw

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Chasing a tornado

By Mark Harasymiw

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"Natural disasters like tornadoes destroy, devastate, and alter people's lives forever. Some people chase tornadoes for scientific purposes, while others just want the thrill of facing a twister's...

Termites

By Mark Harasymiw

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Termites

By Mark Harasymiw

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Army

By Mark Harasymiw

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Heroes of the US Navy

By Mark Harasymiw

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Heroes of the US Navy

By Mark Harasymiw

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Heroes of the Us Navy

By Mark J. Harasymiw

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Dwight Howard

By Malcolm J. Harasymiw

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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.