(3GdTQja GdGOQjSj (B:s (3GTgQ LZQGaj GdYQH hGdGSdGej (B/s - (3MSf ,eMeO YHOGdZfj s ((3GdbGgQI (B:s (3GdgjFI GdeUQjI GdYGeI ddfTQ ,s, 1971)
Keywords: (3GdGOQjSj (B-(3JQGLe s