Hazel Martell Books

The age of discovery

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Explores the history of the world from 1500 to 1650, an active period which included the Renaissance in Europe, European explorations among the ancient empires of Africa and South America, and the...

The great pyramid

By Hazel Martell

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Discusses the building of the pyramids of Egypt, with a focus on the Great Pyramid, the tomb of the pharaoh Khufu.

Native Americans

By Marion Wood, Hazel Martell

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Vikings

By Hazel Martell

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The Vikings

By Hazel Martell

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The Celts

By Hazel Martell

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Provides information about the history, daily life, social structure, and culture of the Celts.

Exploring Africa

By Hazel Martell

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The Vikings

By Hazel Martell, Mike Corbishley

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An illustrated survey of the history, politics, culture, and daily life of the Vikings.

Myths and civilization of the Celts

By Hazel Martell

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Native Americans and Mesa Verde

By Hazel Martell

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Discusses life among the Anasazi Indians at the Mesa Verde site in Colorado between 550 and 1300.

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.