Berglund, Kerstin
- Department of Soil Sciences, Swedish University of Agricultural Sciences
                                WSBookwell Oy Porvoo
2005, pages: 58-65
Title: Pertti Vakkilainen 60
Publisher: Salaojituksen Tukisäätiö
                            
                                Agricultural Science
                            
https://res.slu.se/id/publ/6351