Douglas H. Powell Books

Understanding human adjustment
Profiles in cognitive aging
Profiles in cognitive aging

By Douglas H. Powell

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After the age of 40, we may notice occasional lapses - a forgotten phone number, a friend's name, or a word that was right on the tip of our tongue. By 60, we may find ourselves wondering who calle...

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The nine myths of aging
The nine myths of aging
Counseling Students
Straight Talk on Raising Kids Set 4
Teenagers PA
Teenagers PA

By Douglas Powell

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The aging intellect
The aging intellect

By Douglas H. Powell

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"The Aging Intellect is written for the large number of professionals, including social workers, nurses, retirement home administrators, doctors, psychologists, pastors and others, who oversee the...

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Teenagers
Teenagers

By Douglas H. Powell

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Aging Intellect
Aging Intellect

By Douglas H. Powell

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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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