Studies on bluetongue.  IV.  Field trial of a modified live virus vaccine.
D000818:Animals; D001819:Bluetongue; D012756:Sheep; D014611:Vaccination; D014612:Vaccines; D014613:Vaccines, Attenuated; D014777:Virus Diseases
D014612:Vaccines; D014613:Vaccines, Attenuated
VACCINES AND VACCINATION; VIRUS DISEASES