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by Liguori, Gary; American College of Sports Medicine (ACSM)
by American College of Sports Medicine
by Gerald R. Gems; Linda J. Borish; Gertrud Pfister
by COAKLEY
by Weiler, Paul C.; Ross, Stephen F.; Harper, Michael C.; et al.
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by Champion Jr., Walter T.; Karcher, Richard T.; Ruddell, Lawrence S.
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by France, Robert