00639naa#a2200205#i#450# EN\\bibl\20984 20210506070709.4 2073-0462 20180801b2018####ek#y0engy0150####ca RUS RU THE INFLUENCE OF POTATO PLANTING DENSITY ON productivity, QUALITY OF PRODUCTION AND THE COMMERCIALITY OF TUBERS Article Kazan Kazan state agrarian University 2018 4 с. Article local Shashkarov Leonid Grigor'ev Yakov Mihaylovich Samarkin Aleksey Medvedev Vladimir Ivanovich naukaru.ru