(3JUQjM HdahQ (B: s (3eY bSe NGU Yf adSWjf aj JbGQjQ jjd GdGeQjcjI (B/ s - (3eMehO MSjf UGdM efSjs ((3GdbGgQI (B: s (3OGQ GdacQ GdYQHj , s, 1970)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdbGfhf GdOhdj GdYGes