(3GdTYQ h GdZfGA aj GdeOfjI h ecg dYUQ Hfj Cejg (B/ s - (3Vja, Thbjs ((3GdbGgQI (B:s (3OGQ GdeYGQa,s, 1979)
Keywords: (3GdfbO GdCOHjs; (3GdYUQ GdCehjs