(3JbQjQ Mhd CYeGd GdOhQI GdNGUI ddLfI GdJMVjQjI dbGY GdHMGQ (B/s - (3YhJ SYO GdSjOs; (3LGeYI GdbGgQIs (3cdjI GdMbhbs ((3GdbGgQI(B:s (3cdjI GdMbhb(B-(3LGeYI GdbGgQI,s, 1987)
1
Keywords: (3GdbGfhf GdOhdjs; (3GJaGbjI GdGee GdeJMOI dbGfhf GdHMGQs; (3GdHMQ GdGbdjejs; (3Mb GdeQhQ GdHQFs; (3GdgjFI GdYGeIs; (3Ohd GhQHG GdTQbjIs; (3Ohd ZQH GhQHGs; (3eLehYI GdOhd GdfGejIs; (3HQfGeL Yed GddLfI GdGhdj ddOhQI GdNGeSIs