© 2016 Anna Kyppö and Teija Natri. This is an open access article published under the Attribution-NonCommercial -NoDerivatives 4.0 International
(CC BY-NC-ND 4.0) licence.
Ellei muuten mainita, aineiston lisenssi on © 2016 Anna Kyppö and Teija Natri. This is an open access article published under the Attribution-NonCommercial -NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence.