(3GdLQjOI GdQSejI (B:s (3EJaGbjI gGeHhQL (B/ s - (3LeghQjI eUQ GdYQHjI (B.s ((3GdbGgQI (B:s (3GdeWGHY GdCejQjI ,s, 1991)
Keywords: (3GdLQjOI GdQSejI (B.s; (3GdeWHhYGJ GdQSejI(B. s; (3GdbGfhf GdOhdi (B. s; (3GdEJaGbjGJ h GdeYGgOGJ (B.s; (3EJaGbjI gGeHhQL(B.s