(3TcGhi GdeUQi GdaUjM (B: (3fhe GdGZfjGA (B/ s - (3jhSa GdbYjOs ((3HjQhJ (B: s (3OGQ GdTQhb , s, 1989)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdYQHjIs