(3OQhS aj bGfhf GdYbhHGJ GdbSe GdNGU (B:s (3GdLQGFe GdeVQI HGdeUdMI GdYGeI hLQGFe GdGYJOGA Ydi GdCehGd (B/s - (3eOMJ QeVGfs ((3GdNQWhe (B:s (3LGeYI Gdfjdjf (B- (3hMOI GdWHY hGdJUhjQ ,s, 1987)
Keywords: (3GdLQGFe GdeVQI HGdeUdMI GdYGeIs; (3GdbGfhf GdLfGFjs