(3cJGH MQH GdQja GdJMQjQjg h eQGMd GdfVGd (B/ s - (3GdHhYjGTj, CMeO YHO GdSdGes ((3GdOGQ GdHjVGA (B:s (3YHOGdSdGe LShS h ShTHQS,s, 1974)
Keywords: (3JGQjN GdeZQHs; (3GdJGQjN GdSjGSjs; (3GdESJYeGQ GdaQfSjs