Upton Sinclair Books

August 22nd
August 22nd

By Upton Sinclair

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Dragon's teeth
Dragon's teeth

By Upton Sinclair

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Dragon harvest, 1938-1940
Dragon harvest, 1938-1940

By Upton Sinclair

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A world to win, 1940-1942
A world to win, 1940-1942

By Upton Sinclair

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O shepherds speak.
O shepherds speak.

By Upton Sinclair

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The flivver king
The flivver king

By Upton Sinclair

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They call me Carpenter
They call me Carpenter

By Upton Sinclair

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The Jungle
The Jungle

By Upton Sinclair

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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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