Wydania przez Gordon Duffy

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Cover for Gordon Duffy · 7 Exercise Myths That Are Killing Americans: the Ageless Truths That Will Keep You Fit, Functional and Fabulous for a Lifetime (Paperback Book) (2013)

7 Exercise Myths That Are Killin... (2013)

Cover for Gordon Duffy · 7 Exercise Myths That Are Killing America: Why Everything You Know About Fitness is Dead Wrong (Paperback Book) (2012)

7 Exercise Myths That Are Killin... (2012)