Biomass production of 10 years old downy birch (Betula pubescens Ehrh.) stand in ash-fertilized cut-away peatland. - Huotari, N.; Hytönen, J.; Tillman-Sutela, E.; Issakainen, J.; Kubin, E. (International Peat Society, 2012)
Keywords: biomassa; hieskoivu; puutuhka; turvetuhka