Leshchuk, N.V., Levchenko, V.V. , Sydorchuk, A.I. and Boiko, A.I. 2023. Historical origins and stages of formation of the Variety Testing Network of the Cherkasy Region. Plant varieties studying and protection. 19, 2 (Jun. 2023), 104–109. DOI:https://doi.org/10.21498/2518-1017.19.2.2023.282556.