Lois Markham Books

Helen Keller
Helen Keller

By Lois Markham

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A biography of Helen Keller, detailing her childhood struggles with blindness and deafness and her later triumphs as a champion of the handicapped.

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Colombia
Colombia

By Lois Markham

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Introduces the geography, history, people, and culture of the country known as the Gateway to South America.

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Inventions that changed modern life
Inventions that changed modern life

By Lois Markham

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Describes twenty inventions that changed modern life, including the steam engine, photography, and television.

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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.

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