(3GdbSe GdNGU aj bGfhf GdYbhHGJ (B:s (3GdLQGFe GdeVQI HGdeUdMI GdYehejI hLQGFe GdGYJOGA Ydi GdCTNGU (B/s - (3QeSjS HgfGes ((3GdbGgQI (B:s (3OGQ GdeYGQa ,s, 1958)
. 323-313(3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3bGfhf GdYbhHGJ GdbSe GdNGUs -- (3GdLQGFe GdeVQI HGdeUdMI GdYGeIs