Karen J. Donnelly Books

Electrician Career Exploration

By Karen J. Donnelly

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Women Pilots of World War II (American Women at War)

By Karen J. Donnelly

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Profiles American women who served as pilots during World War II, and describes their struggles to prove their value both in war time and after returning home.

Biomes of the past and future

By Karen J. Donnelly

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Describes what biomes are, where they are found, and how they affect life, including humans.

Droughts of the Past and the Future Donnelly Karen J. Earth s Changing Weather and Climate.

By Karen J. Donnelly

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Floods of the Past and Future Earth s Changing Weather and Climate

By Karen J. Donnelly

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Ice ages of the past and the future

By Karen J. Donnelly

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Decribes glaciers and how they affect changes in climate, both past and future.

Hardware engineer

By Karen J. Donnelly

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Discusses what hardware computer engineers do and how to prepare for a career in this field.

Coping with lyme disease

By Karen Donnelly, Karen J. Donnelly

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Defines lyme disease and explains its causes, symptoms and diagnosis. Also discusses methods of protection, including vaccination.

Cruzan V. Missouri

By Karen J. Donnelly

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Leprosy

By Karen J. Donnelly

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Presents information about leprosy from a historical perspective, including its spread, its treatment, and its future.

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.