(https://www.slideshare.net/williamhowell21000)???? ??????????????? ?????? ?? ?????? ? ??????????? ???????? ?????? ??? ?????? ???????? ? ?????????????? ???????? ?? ?????????? ??????????? ? ????????, ??????? ????? ???? ??? ????????????? ??????? ????????? ??????? ????????? ????. ????????? ??????? ????????, ?? ?? ?????? ??????, ?????? ?? ??????? ?????? ????????? ???????????? ????????? ??... https://trenton5iid8.eedblog.com/31440561/