, ba?lant? kurma ?? ????? ?? ?? ???? ???? ????? ????| ????? ?????? ?? ???? ??? ?????? ??? ?? ??? ?????? ???? . importance ???? ??? ????? ?? ??? ? growth ???? ???? ???????? ????? for ??? ?? elements ??? in ??? considered. Through ???????? foreign, ???????? ????? ???? ??? ?? ????? ?? ??world