(3GdQjGV GdfGVQI hGdMOGFb GdfjQI GdRGgQI aj GdYbGFO hGdafhf GdeJfhYI GdaGNQI (B/ s - (3GdSYOj, YHO GdQMef Hf fGUQ, s 1307-1376 (3gLQj, s ((3GdQjGV, GdeedcI GdYQHjI GdSYhOjI (B: s (3ecJHI GdeYGQa, (B400 (3g`(B. = 1980.s, 1980)
Keywords: (3GdGSdGes -- (3GdbQf (B20s; (3GdGSdGes -- (3MQcGJ GdGMjGA hGdGUdGM hGdJLOjO(B.s