Gary Jeffrey Books

Defying death in the desert

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Presents three stories of survival in the desert. Includes an introduction to the habitat, maps, survival tips and summaries of other life-or-death experiences. Suggested level: primary, intermediate.

Defying death in the jungle

By Gary Jeffrey

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Three stories of survival in the jungle. Includes an introduction to the habitat, maps, survival tips and summaries of other life-or-death experiences. Suggested level: primary, intermediate.

Graphic Biographies

By Gary Jeffrey

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Graphic Biographies

By Gary Jeffrey

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Martin Luther King Jr

By Gary Jeffrey

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Medical breakthroughs

By Gary Jeffrey

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Spectacular shipwrecks

By Gary Jeffrey

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The History of Flight

By Gary Jeffrey

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Solving Crimes with Trace Evidence

By Gary Jeffrey

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Hurricanes

By Gary Jeffrey

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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.