[INVESTIGATIONS OF ACTIVE IMMUNIZATION AGAINST OVINE ENZOOTIC ABORTION.  IMMUNOLOGICAL STUDY IN VARIOUS EPIZOOTIC CONDITIONS].
D000034:Abortion, Veterinary; D000818:Animals; D005260:Female; D011247:Pregnancy; D012282:Rickettsia Infections; D012756:Sheep; D012757:Sheep Diseases; D034561:Sheep, Domestic; D014611:Vaccination; D014612:Vaccines
D014612:Vaccines
ABORTION, VETERINARY; RICKETTSIAL DISEASES; SHEEP DISEASES; VACCINES
ISSLEDOVANIIA V OBLASTI AKTIVNOI IMMUNIZATSII PROTIV ENZOOTICHESKOGO VYKIDYSHA U  OVETS. IMMUNOLOGICHESKIE ISSLEDOVANIIA PRI RAZLICHNYKH EPIZOOTOLOGICHESKIKH USLOVIIAKH.