????? ???? ???????? ????? ???? rightman.ir ????? ????? ????? ????? ????? ???????? ???? ??????? ??? ???? ???? ??????? ???? ?? ?? ?? ??????? ????? ???? ???????? ?????? ????? ????? ????? ????? ????? ???? Category:science and education Global Rank:2,750,485 visits:13.7K pages/Per:1.4 ADS