(3COHGA GdYQH aj GdCYUQ GdYHGSjI (B: (3MjGJge (B- (3BKGQge (B- (3fbO BKGQges - (3HSJGfj(B. (3HWQSs ((3OGQ GdLjds (3HjQhJs, 1979)
Keywords: (3BOGHs; (3GdCOH GdYQHjs; (3JQGLe GdCOHGA GdYQHs; (3GdfbO GdCOHj s