(3GdMce GdYWGFjI (B/ s - (3EHf YWGA Gddg GdEScfOQj, JGL GdOjf CHh GdaVds ((3OeTb (B:s (3GdeLeY GdYQHj ddJCdja h GdOQGSGJ h GdJQLeI,s, 1985)
Keywords: (3GdMce h GdGeKGds; (3GdCOH GdYQHjs