(https://www.slideshare.net/williamhowell21000)???? ??????????????? ?????? ??? ?????? ? ????? ???????? ?????? ??? ?????? ???????? ????? ?????????????? ???????? ?? ?????????? ??????????? ? ????????, ??????? ??????? ?????? ??? ????????????? ??????? ????????? ?????? ?????????. ????????? ??????? ???????, ???? ?? ?????? ??????, ?????? ? ??????? ?????? ????????? ???????????? ??????? ???????... https://rowanc5lk6.izrablog.com/32006031/