%0 Journal Article %T THE ISSUE OF GRAY RATS’ HELMINTHS OF OMSK CITY %A Penkina, O.U. %A Ushakova, E.L. %A Ivanyushina, A.M. %A Chebotareva, T.Y. %K rats, helminth, extensiveness and intensity of infestation, the species composition. %J Vestnik of Kazan State Agrarian University %D 2017 %N 11 %P 4 %I Kazan state agrarian University