(3GdOdjd GdYQHi dGSJNOGe HQGeL NOeGJ GdMGSH GdTNUi (B/s - (3eMeO(B: (3GTQa GMeO(B.s; (3GdbfGhi(B: (3HgGA cQGe(B.s ((3GdbGgQI (B:s (3THcI GdceHjhJQ GdTNUi(B:s, 1991)
(3GdecJHI JbJfi abW GdeLdO GdGhd(B.s
Keywords: (3GdMGSHGJ GdGdcJQhfjIs -- (3NOeGJ(B.s; (3GdMGSHGJ GdGdcJQhfjIs -- (3HQGeL(B.s