Doesn't suit? No problem! You can return within 30 days
You won't go wrong with a gift voucher. The gift recipient can choose anything from our offer.
30-day return policy
Zadacha postroeniya razlichnogo roda klassifikatsiy byla i ostayetsya aktual'noy na protyazhenii ryada poslednikh desyatiletiy. Za eto vremya byl vydelen i unifitsirovan ryad zadach klassifikatsii v sotsial'no-ekonomicheskikh i tekhnicheskikh issledovaniya