Charles Barry Townsend Books

Merlin's puzzle pastimes
Merlin's puzzle pastimes

By Charles Barry Townsend

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A collection of puzzles, riddles, and problems selected by the author from his earlier volumes.

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The clue club
The clue club

By Charles Barry Townsend

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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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