[TYPHOID AND PARATYPHOID IN SOFIA IN 1962].
D001203:Ascomycota; D002031:Bulgaria; D002701:Chloramphenicol; D009017:Morbidity; D010284:Paratyphoid Fever; D014435:Typhoid Fever; D014436:Typhoid-Paratyphoid Vaccines
D014436:Typhoid-Paratyphoid Vaccines; D002701:Chloramphenicol
BULGARIA; CHLORAMPHENICOL; MORBIDITY; PARATYPHOID FEVERS; TYPHOID
KOREMNIIAT TIF I PARATIF UT V SOFIIA PREZ 1962 GODINA.