Literature
- 1982 . Geografiya Finlyandii [The geography of Finland] Moscow
- Varjo , U. 1977 . Finnish farming typology and economics Budapest
- _____ . 1984 . “Changes in farming in Finland in 1969–1975,” . Fennia , 162 ( 1 )
- 1984 . Suomen tilastollinen vuosikirja Helsinki
- 1982 . Maatalous 1981 Helsinki