Authors
Maria Ivanova
Institute of Soil Science, Agrotechnology and Plant Protection “N. Poushkarov“, Sofia, Bulgaria
Zornitsa Popova
Institute of Soil Science, Agrotechnology and Plant Protection “N. Poushkarov“, Sofia, Bulgaria
© 2021 Maria Ivanova, Zornitsa Popova, published by Slovak University of Agriculture in Nitra
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.