Lucy Hawking Books

George and the Blue Moon George s Secret Key to the Universe

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George s secret key to the universe

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Follows the adventures of a young boy and his neighbor friend as they travel through a computer portal into outer space, where they explore such mysteries as black holes and the origins of the univ...

George s secret key to the universe

By Lucy Hawking

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George s Cosmic Treasure Hunt

By Lucy Hawking

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George is heartbroken when his neighbor Annie and her father move to Florida, but when Annie sends him a message telling him she has been contacted by aliens with a terrible warning, he joins her i...

George and the Big Bang George s Secret Key

By Lucy Hawking, Stephen Hawking

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George s Secret Key Paperback Collection

By Lucy Hawking, Stephen Hawking

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Old title: George's Secret Key Paperback Collection: George's Secret Key to the Universe; George's Cosmic Treasure Hunt; George and the Big Bang

George s Secret Key Hardcover Collection

By Lucy Hawking, Stephen Hawking

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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.