K Lewis Books

Starting statistics
Starting statistics

By Kenneth Lewis

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The ellipse.
The ellipse.

By Kenneth Lewis

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Polyhedra.
Polyhedra.

By Kenneth Lewis

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Secret codes.
Secret codes.

By Kenneth Lewis

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Delhi's historic villages
Delhi's historic villages

By Charles Lewis

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An attempt to highlight some of the lesser known historical monuments of Delhi.

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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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