Influence of the preparation “Prodevit-tetra” and “Nanovit” on endogenous intoxication of cows during the dry period
Naukovij vìsnik Lʹvìvsʹkogo nacìonalʹnogo unìversitetu veterinarnoï medicini ta bìotehnologìj ìmenì S.Z. G̀žicʹkogo