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Walking for Health

Lon H. SeigerJames L. Hesson

出版	Wm. C. Brown Publishers, 1990
主題	Health & Fitness / Exercise / GeneralSports & Recreation / Walking
ISBN	06971101419780697110145
URL	http://books.google.com.hk/books?id=S5UKAQAAMAAJ&hl=&source=gbs_api