(3GdTWGQ (B((3jdjg GdHfjI GdfUjI dSjQI GdJMQQ ef GdbgQ(B) / s - (3UHQi MGaXs; (3eMeO TcQis ([S.N] : (3OGQ GdSGbi , s, 1992)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdYQHjIs