Authors
Mária Babulicová
National Agricultural and Food Centre – Research Institute of Plant Production,, Piešťany, Slovak Republic
Boryana Dyulgerova
Institute of Agriculture –, Karnobat, Bulgaria
© 2018 Mária Babulicová, Boryana Dyulgerova, published by National Agricultural and Food Centre
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.