Author: Kraevoĭ seminar rabotnikov partiĭnykh, sovetskikh, selʹskokhozi͡aĭstvennykh organov, opytno-pokazatelʹnykh khozi͡aĭstv i nauchnoissledovatelʹskikh uchrezhdeniĭ (1962 T͡Selinograd, Kazakhstan)