(3GdNha hGdbdb YfO GdGWaGd (B/ s - (3YcGTI YHOGdefGf GdWjHis ((3HjQhJ (B: s (3OGQ GdLjd , s, 1999)
Keywords: (3GdNhas; (3GdGegGJ hGdGHfGAs; (3GdJdjaRjhf hGdGWaGds; (3GdGWaGd (B- (3QYGjIs; (3GdGWaGd, Yde faSs