(3fehPL GdbGfhf GdYbhHGJ (B/s - (3eMehO eMehO eUWbis ((3GdbGgQI (B:s (3eWHYI LGeYI GdbGgQI ,s, 1976)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdLfGFjs