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Exercise Without Movement
Bob Hoffman
其他書名
One Minute a Day for Physical Fitness, Strength and Health : Functional Isometric Contraction System
出版Bob Hoffman Foundation, 1961
URLhttp://books.google.com.hk/books?id=QA6MnQEACAAJ&hl=&source=gbs_api
註釋Isometrisches-Training.