(3Yde GdfaS GdaQOj (B:s (3GUhdg hJWHjbg (B/s - (3QeRj ,GSMbs; (3eQGO , jhSa s ((3GdbGgQI(B:s (3OGQ GdeYGQa ,s, 1981)
Keywords: (3Yde GdfaS GdaQOjs