Bakalova, A. V., N. V. Gritsyuk, and V. Y. Tytarenko. 2022. “UPGRADING OF OP–2000 SPRAYER FOR PROTECTION OF BLACK CURRANTS AGAINST SUCKING PESTS”. Bulletin of Sumy National Agrarian University. The Series: Agronomy and Biology 45 (3), 3-9. https://doi.org/10.32845/agrobio.2021.3.1.