Karl Knopf Books

Stretching For 50
Stretching For 50

By Karl Knopf

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Weights for 50
Weights for 50

By Karl Knopf

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Stretching for 50
Stretching for 50

By Karl G. Knopf

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Healthy shoulder handbook
Healthy shoulder handbook

By Karl G. Knopf

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Containing over 100 exercises complete with step-by-step photos, this book offers a comprehensive rehab, strengthening, and maintenance program for overcoming common shoulder injuries. With easy-to...

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Healthy Shoulder Handbook
Healthy Shoulder Handbook

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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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