R.Quentin Grafton, Timothy C. Sargent A Workbook in mathemathical methods for economists - 0 - San Francisco ICS press 1997 - 278 - 0 . ISBN: 0 2600 Source: Бэлэг дурсгалын журмаар авсан Subjects--Index Terms: mathemathica Dewey Class. No.: 330 / G-87