article by Jens-Konrad Preem et al published December 2012 in Ecological Engineering
author: Jens-Konrad Preem, Kristjan Oopkaup, Jaak Truu, Heljä-Sisko Helmisaari, Martin Zobel, Ülo Mander, Marika Truu, Krista Lõhmus, Veiko Uri
Copyright status information is not available for this work. The copyright status depends on the jurisdiction, the author's date of death and the date the work was created or published.
To learn more about copyright terms in different countries, visit the countries and terms page.