(3GZQH ef GdNjGd (B/ s - (3ejdGO GdeZQHis ([S.N] : (3OGQ GdMSGe ddWHGYI hGdfTQ , s, 1990)
Keywords: (3GdbUU GdYQHjIs; (3GdeJQLeGJs; (3GdbUU GdYQHjI GdbUjQIs