Tkachuk OP, Verhelis V. I. VI. PROTEIN AND NITRATE CONTENT IN MAIZE GRAINS AND SUNFLOWER SEEDS WHEN GROWN ON SLOPEFUL LAND. PB [Internet]. 2023Feb.14 [cited 2024Apr.29];(36):21-7. Available from: http://pb.pdatu.edu.ua/article/view/273877