00498naa#a2200169#i#450# EN\\bibl\613 20240423224401.2 2073-0462 20131024b2013####ek#y0engy0150####ca RUS RU Agroecological assessment of new varieties of potatoes in the middle Volga steppe Journal article Kazan Kazan state agrarian University 2013 3 с. Journal article local Vladimirov Sergey naukaru.ru