John E. Mayer Books

Jewish-gentile courtships
Jewish-gentile courtships

By John E. Mayer

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The client speaks
The client speaks

By John E. Mayer

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Adolescence and alcohol
Adolescence and alcohol

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Family Fit
Family Fit

By Dr. John Mayer

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Great Practices Great Games
Great Practices Great Games

By John Mayer

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Becoming
Becoming

By John E. Mayer

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Client Speaks
Client Speaks

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Client and agency
Client and agency

By John E. Mayer

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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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