Faculty of Agricuhure in Osijek;
J J. Strossmayer University of Osijek Trg Sv. Trojstva 3;
Oso'ek 31000;
Croatia;
Primorako-Goranso County;
Zrtava fasizma 17/L Roeka 51000;
Croatia;
Center for mountainous agriculture of the Primorsko-Goranska County;
Stara Susica;
Ravna Gora 51314;
Croatia;