Gary Raham Books

Deep Time Diaries
Deep Time Diaries

By Gary Raham

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Fossils The Restless Earth
Fossils The Restless Earth

By Gary Raham

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Dinosaurs in the garden
Dinosaurs in the garden

By Gary Raham

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The deep time diaries
The deep time diaries

By Gary Raham

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The fictional diaries of a family from the twenty-second century that discovers a time machine which takes them back through Earth's ancient past. Includes related activities, maps, bibliographies,...

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Teaching Science Fact with Science Fiction
Explorations in backyard biology
Life Science Quick Starts Grades 4 9
Explorations in Backyard Biology
Bug Alert
Bugs that kill
Bugs that kill

By Gary Raham

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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.

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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.

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