Pranee Chinwatanachai. (1989) The study of effects of interferential current on the contractile properties of the isometric contraction of the slow and fast muscle in normal. Mahidol University,:ม.ป.ท.Pranee Chinwatanachai. 1989. The study of effects of interferential current on the contractile properties of the isometric contraction of the slow and fast muscle in normal. ม.ป.ท.:Mahidol University,;Pranee Chinwatanachai. The study of effects of interferential current on the contractile properties of the isometric contraction of the slow and fast muscle in normal. ม.ป.ท.:Mahidol University, 1989. Print.