00559naa#a2200193#i#450# EN\\bibl\101710 20250902011840.2 2588-0209 20181225b2018####ek#y0engy0150####ca RU THE MANAGEMENT STAFF IS A PROFESSIONAL GROUP OF AGRICULTURAL ENTERPRISES OF PENZA REGION Journal article Moscow Electronic science 2018 0 с. Journal article local Ksenofontova K Tuskov A Kuznetsova T Tolmacheva V mshj.ru