Thomas, Mark Books

Le Silence De La Mer La Collection Escrivac
Fun and Games in Colonial America Colonial America
Work in Colonial America
Work in Colonial America

By Thomas Mark

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A simple introduction to various jobs in Colonial America, including those performed by blacksmiths, coopers, and shoemakers.

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Work in Colonial America
Work in Colonial America

By Thomas Mark

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A simple introduction to various jobs in Colonial America, including those performed by blacksmiths, coopers, and shoemakers.

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Fun and Games in Colonial America Colonial America
La represa de Itaipu
La represa de Itaipu

By Thomas Mark

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The Petronas Twin Towers
The Petronas Twin Towers

By Thomas Mark

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A look at the Petronas Twin Towers in Kuala Lumpur, Malaysia.

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The Seikan Railroad Tunnel
The Seikan Railroad Tunnel

By Thomas Mark

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A look at the Seikan Railroad Tunnel, that connects the islands of Hokkaido and Honshu in Japan.

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The Itaipu Dam
The Itaipu Dam

By Thomas Mark

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A look at the Itaipu Dam on the Parana River in South America, between Brazil and Paraguay.

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The Discoverer Enterprise
The Discoverer Enterprise

By Thomas Mark

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Introduces the Discoverer Enterprise, a ship that drills for oil under the ocean floor in the Gulf of Mexico.

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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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