[Effectiveness of vaccinating calves of different ages].
D000367:Age Factors; D000372:Agglutination Tests; D000818:Animals; D002004:Brucella Vaccine / Q000008:administration & dosage*; D002007:Brucellosis, Bovine / Q000276:immunology*; D002417:Cattle; D003168:Complement Fixation Tests; D013997:Time Factors
D002004:Brucella Vaccine
Effektivnost' vaktsinatsii teliat razlichnogo vozrasta.