(3GdLQGFe GdhGbYI Ydi GdCTNGU hGdCehGd aj bGfhf GdYbhHGJ GdCQOfj (B/s - (3eMeO UHMj fLes; (3YHO GdQMef Jhajbs ((3YeGf (B:s (3eWHYI GdJhajb ,s, 1987)
(3jTJed Ydj HHdHhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdLQGFe GdeGSI HGdCTNGUs -- (3GdCQOfs; (3GdbGfhf GdLfGFjs