The books are labeled into graded examining concentrations As well as their classification by topic, age, or according to the Worldwide Baccalaureate system adopted in most of the major faculties from the region. ??? ???? ??? ???? ????? ????????? ? ????? ????????: ???? ????? ???? ????? ???? ???? ????? ????? ??? ??????? ?????? ????? ?????? ?? ????

???? ?? ?????? ??????? ?? ???? ???????? ??????? ??????. ???? ???????? ????? ?? ??? ????? ??????? ????????? ??????. ???????? ????, ???? ???? ?????????????? ?? ??????? ?? ??????? ?????? ??! ????????? ???? ??????????? ?? ?? ?????? ???? ???? ????? ?????? ????? ?????? .???????? ??? ??? ????? ???? ??? ???. ??????? ? ???????????? ????????? ??? ???? ??