(3efXeI GdJLGQI GdYGdejIs (WTO) - (3eMeO MGeO QVhGfs ((3GdLjRI(B, :s (3OGQ fhHd ddfTQ hGdJhRjY(B,s, 2012)
Keywords: (3GdefXeGJ GdOhdjI GdEbdjejI (B.s