Jon G. Lyon Books

Coping with aphasia
Coping with aphasia

By Jon G. Lyon

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Schooling Mr. Brennan
Schooling Mr. Brennan

By Jon G. Lyon

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Meet Jack Brennan, a twenty-one-year-old educational greenhorn armed with a bachelor's degree in secondary science education, a reasonable degree of intelligence, and a woefully shallow pool of exp...

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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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