(3GdefWbJGf GdeJLeOJGf GdTeGdjI h GdLfhHjI (B/ s - (3SHjQj, BQeSJQhfLs; (3Gdhcjd, YeQ ceGds ((3GdbGgQg (B:s (3OGQ GdeYGQa,s, 1981)
Keywords: (3GdefWbI GdbWHjI GdTeGdjIs; (3GdefWbI GdbWHjI GdLfhHjIs; (3GdQMdGJ h GdSaQs