[IMMUNOLOGICAL SURVEYS ON NATURAL FOCI OF TICK ENCEPHALITIS].
D000906:Antibodies; D001102:Arbovirus Infections; D002031:Bulgaria; D003604:Czechoslovakia; D004660:Encephalitis; D004671:Encephalitis, Arbovirus; D006801:Humans; D009500:Neutralization Tests; D013987:Ticks
D000906:Antibodies
ANTIBODIES; ARBOVIRUS INFECTIONS; BULGARIA; CZECHOSLOVAKIA; ENCEPHALITIS, EPIDEMIC; NEUTRALIZATION TESTS