Muntiu, N [Immunological variability in the type of aphthous virus, its limits and practical significance]. [electronic resource] - Bulletin - Office international des epizooties - 249-61 p. digital Publication Type: Journal Article ISSN: 0300-9823 Subjects--Topical Terms: AnimalsAphthovirusCattleFoot-and-Mouth Disease--immunologyVaccinationViral Vaccines