(3eHGOF GdJMdjd GdeQcH (B/s - (3cJcJ, eMehO eMeO(B.s ((3LOI (B:s (3OGQ GdTQhb ,s, 1990)
(3eUWdMGJ (B: (3U(B. 477-483.s
(3HHdjhLQGajI (B: (3U(B. 475.s
Keywords: (3GdJMdjd GdYOOjs