Mark Harasymiw Books

Mapping South America

By Mark Harasymiw

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Alligators are not pets!

By Mark Harasymiw

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This book explains why alligators should not be pets, discussing their size, desire for meat, protection over hatchlings, strong jaws, and aggressive behavior.

Alligators are not pets

By Mark Harasymiw

Average: 0.00, 0 Ratings

This book explains why alligators should not be pets, discussing their size, desire for meat, protection over hatchlings, strong jaws, and aggressive behavior.

Alligators are not pets!

By Mark Harasymiw

Average: 0.00, 0 Ratings

This book explains why alligators should not be pets, discussing their size, desire for meat, protection over hatchlings, strong jaws, and aggressive behavior.

Alligators are not pets!

By Mark Harasymiw

Average: 0.00, 0 Ratings

This book explains why alligators should not be pets, discussing their size, desire for meat, protection over hatchlings, strong jaws, and aggressive behavior.

Matematicas en el Sol Math on the Sun

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...

Chasing a tornado

By Mark Harasymiw

Average: 0.00, 0 Ratings

"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...

Chasing a tornado

By Mark Harasymiw

Average: 0.00, 0 Ratings

"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

Average: 0.00, 0 Ratings

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.