00668naa#a2200217#i#450# EN\\bibl\4567 /en/manage/index 20250902000255.2 2073-0462 20141214b2014####ek#y0engy0150####ca RUS RU The results of experimental research of rotational conical working unit in the soil canal Journal article Kazan Kazan state agrarian University 2014 7 с. Journal article local Yarullin Fanis Ibyatov Ravil Valiev Ayrat Rasimovich Shiriyazdanov Rustem fht.editorum.ru /en/manage/index