??????????? ??? ????? ??? ?? ????? ???, ? ?????, ? ???????, ? ???? ??? ? ??????? ????????? ?? ?????????. ?????? ?? ????? "???? ?? ?????? ????? ????????? ???? ??????".????? ?????? ??? ????? ?????????? ??????? ?????? ??? ??????? ??? ????????? ????? ????? ????.Proof of labor. This depends on men and women worldwide, known as miners, competing being t