(3KhQI GdGOZGd (B/ s - (3djSGQjOS, HGQHQgs; (3YHOGdhgGH GdRGfJGfis ([S.N] : (3eDSSI fGUQ ddKbGaI , s, 1981)
Keywords: (3GdKhQGJs; (3GdGMhGd GdSjGSjIs; (3GaQjbjGs; (3MQcGJ GdJMQjQs; (3GdGSJYeGQs