(3GdTHGH hGdeTGQcg GdSjGSjg (B/ s - (3SYO GHQGgje LeYIs ((3GdbGgQI (B:s (3OGQ GdKbGaI ddfTQ hGdJhRjY ,s, 1984)
Keywords: (3GdGLJeGY, Ydes; (3GdJaGYd GdGLJeGYis; (3GdTHGH (B- (3GdfTGW GdSjGSis; (3GdeTGQcI GdSjGSjIs