(3GdJhLjg GdELJeGYi ai GdESdGe (B:s (3GdLRA GdKGdK (B/s - (3HMhK eDJeQGJ eLeY GdHMhK GdGSdGejIs 1972 : (3GdbGgQIs ((3GdbGgQI (B:s (3eWGHY GdQLhi ,s, 1972)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdTQjYI GdGSdGejIs