Rahmatullah, N., A., Rahmawati, H., G., A., T.(2009).Neck Massage Theraphy AT89S51 Microcontroller Based .:Jurusan Teknik Elektromedik Poltekkes Kemenkes Surabaya.
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Rahmatullah, N., A., Rahmawati, H., G., A., T..Neck Massage Theraphy AT89S51 Microcontroller Based.:Jurusan Teknik Elektromedik Poltekkes Kemenkes Surabaya,2009.Text.