(3GdehShYI GdLfGFjI(B: (3GdLRA GdChd(B: (3EJLGQ(B- (3ETJQGcs - (3LfOj YHOGdedcs ((3eUQs (3eWHYI OGQ GdcJH GdeUQjI HGdbGgQI s, 1931)
Keywords: Social Sciences (3GdYdhe GdGLJeGYjIs; General