The 1st e book remained unfinished, the next one is definitely the version with the study course he gave in Leningrad College.??? ?????? ?????? ?? ??????? ?????, ???????? ?? ??????? ? ??????-?????????, ???? ?????????? ? ????????.??? ???????? ?????????? ????????????????? ?????????, ??????? ??????????? ? ????????? ?????? ? ???????, ????? ???????? ???