?? ???? ????????? ?? ??? ???????? ??? ????????? ?? ???? ?? ???????? ??????? ??????? ????????. ?????? ????? ???????? ?? ???? ???? ????? ??????? ???????? ????? ?? ????? ????????? ?? ??? ???????? ?????? ?????? ????? ?????? ??? ???? ?????. The term “potash” is usually a common expression