(3fgGjI GdGOH ai eYQaIGfSGH GdYQH (B/ s - (3GHi GdYHGS GMeOGdbdbTfOis ([S.N] : (3OGQ GdcJGH GdeUQi , s, 1990)
Keywords: (3GdGOH GdYQHis; (3GdGfSGH GdYQHjIs