(3GdCReI GdSjGSjI hGdOSJhQjI aj eUQ (B1987 - 1990 / s - (3eMeO Sdje GdYhGs ((3GdbGgQI (B: s (3GdRgQGA ddEYdGe GdYQHj, s, 1991)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdOSJhQj h GdeHGOF GdOSJhQjI GdYGeIs; (3GdSdWI GdJTQjYjIs