(3bGehS GdceHjhJQ (B:s (3fXe GdGJUGdGJ(B-(3fXe GdeYdheGJ(B-(3bhGYO GdHjGfGJ (B: (3EfLdjRj(B-(3YQHj (B/s - (3NTHI, eMeO GdSYjOs; (3YHO Gddg, eMehO YHO GdYXjes ((3GdbGgQI (B:s [(3O(B. (3f(B.](3,s, 1990)
(3GdfU HGddZJjf GdYQHjI hGdEfLdjRjI(B.s
Keywords: (3GdMGSHGJ GdEdcJQhfjIs -- (3eYGLes; (3GdMGSHGJ GdEdcJQhfjIs -- (3eUWdMGJs; (3fXe GdeYdheGJs -- (3eUWdMGJs; (3bhGYO GdHjGfGJs