Gloria Skurzynski Books

Mysteries in Our National Parks: CliffHanger

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When a cougar attacks a hiker in Mesa Verde National Park, the Landons have another mystery on their hands. Jack and Ashley are used to visiting parks with their wildlife veterinarian mother and ph...

Mysteries in Our National Parks: Wolf Stalker

By Gloria Skurzynski

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In this fast-paced adventure, the Landons trail a wounded wolf in Yellowstone National Park. The park is abuzz with rumors of a wolf attack. Meanwhile, a killer stalks the woods. Unaware of the dan...

Mysteries in Our National Parks: Out of the Deep

By Gloria Skurzynski

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A baby whale is the latest mammal stranded on the beaches of Acadia National Park. When the Landons run to get help, they don’t notice Bindy Callister slip away. When they track her down, she...

This is rocket science

By Gloria Skurzynski

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A history of rockets and rocket science, from the Chinese discovery of gunpowder to the development of nuclear spacecraft and rockets that sail on the solar winds.

This is rocket science

By Gloria Skurzynski

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A history of rockets and rocket science, from the Chinese discovery of gunpowder to the development of nuclear spacecraft and rockets that sail on the solar winds.

Gefangen im Cyberstorm.

By Gloria Skurzynski

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Almost the real thing: Simulation in your high-tech world

By Gloria Skurzynski

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What Happened in Hamelin

By Gloria Skurzynski

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Spider Boy

By Gloria Skurzynski

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Waves

By Gloria Skurzynski

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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.