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<xml><bibliography><APA>Yuttana Tongtuam. (2012) Opimization of shading effect by using shading device integrated photovoltaic system. Naresuan University:ม.ป.ท.</APA><Chicago>Yuttana Tongtuam. 2012. Opimization of shading effect by using shading device integrated photovoltaic system. ม.ป.ท.:Naresuan University;</Chicago><MLA>Yuttana Tongtuam.  Opimization of shading effect by using shading device integrated photovoltaic system.  ม.ป.ท.:Naresuan University, 2012. Print.</MLA></bibliography></xml>
