Authors
Jaanus Paal
Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
Iti Jürjendal
Department of Science and Education, Tallinn, Estonia
© 2019 Jaanus Paal, Iti Jürjendal, published by Estonian University of Life Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.