(3JaSjQ ShQI GdESQGA (B/s - (3YHOGddg eMehO TMGJgs ((3GdbGgQI (B:s (3GdgjFI GddeUQjI GdYGeI ddcJGH,s, 1975)
(3GdfU HGddZI GdYQHjIs
Keywords: (3JaSjQ GdbQBfs; (3GdTQjYI GdESdGejIs