- Finland's Foreign Trade: Value of Exports 1840-2000(2017-03-27) Hjerppe, Riitta; University of Helsinki. Department of Economics and Political Studies - Hjerppe, Riitta
- Finland's Foreign Trade: Value of Imports 1840-2000(2017-03-27) Hjerppe, Riitta; University of Helsinki. Department of Economics and Political Studies - Hjerppe, Riitta
- Upper Secondary Students' Experiences of Economics Course YH2 2012-2013(2017-08-08) Sutela, Inkeri; University of Helsinki - Sutela, Inkeri