(3JGQjN GdbQGf (B/ s - (3GHQGgje GdGHjGQis ([S.N] : (3OGQ GdcJGH GdeUQi , s, 1991)
Keywords: (3GdSjQI GdfHhjIs; (3ZRhGJ GdfHis; (3fRhd GdbQGfs; (3JOhjf hLeY GdbQGfs