(3bGfhf GdYbhHGJ GdbSe GdNGU (B.s (3GdLRA GdKGfi(B,s (3LQGFe GdEYJOGA Ydi GdGTNGU hGdCehGd(B/s - (3eCehf SdGeIs ((3GdbGgQI (B:s (3OGQ GdacQ GdYQHi(B,s, 1982)
(3GdfU HGddZI GdYQHjIs
Keywords: (3bGfhf LfGFjs; (3GdLQGFe GdeGSI HGdCTNGUs