(3GdbVjI GdadSWjfjI hGdNWQ GdUgjhfi (B/ s - (3hRGQI GdOaGY (B((3dHfGf(B)s ([S.N] : (3eDSSI GdOQGSGJ GdadSWjfjI , s, 1973)
Keywords: (3GdfRGY GdYQHi GdGSQGFjdis; (3GdbVjI GdadSWjfjIs; (3GdUgjhfjIs