????????? ?? ??? ??? ???????????? ? ???????????????, ?? ?????????? ???????? ???????. ??????? ??????? ? ????? ?????????.??? ????? ?????????? ????????????? ?????, ?? ?????? ??????????????, ???? ?????????? ??????????????? ?????, ????????? ??? "?????????".The lesser the concentration of these trace factors, the “whiter” or even more colourless the … Read More