(3eHGOF efgL GdHMK GdChdjI aj GdYdhe GdGfSGfjI (B/s - (3YHOGdQMje UObjs ((3GdLjRI (B:s (3eWHYI LGeYI GdbGgQI hGdcJGH GdLGeYi,s, 1988)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdLfGFjs; (3Ydhe GfSGfjI s