The lecture was prepared by Mrs. Štefanija Kos Zidar, B.Sc. Eng. agronomy, principal of the School of Horticulture and Visual Arts in Celje.







The lecture was prepared by Mrs. Štefanija Kos Zidar, B.Sc. Eng. agronomy, principal of the School of Horticulture and Visual Arts in Celje.






