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- [3] LEPTOSPIROSIS IN UNITED-STATES, 1971-1973 JOURNAL OF INFECTIOUS DISEASES, 1975, 131 (06): : 743 - 745
- [4] SEROLOGIC EVIDENCE OF EQUINE LEPTOSPIROSIS IN NORTHEAST UNITED-STATES CORNELL VETERINARIAN, 1976, 66 (01): : 105 - 109
- [5] OBSERVATIONS ON THE PREVALENCE OF LEPTOSPIROSIS IN CANINE POPULATIONS OF THE UNITED-STATES AMERICAN JOURNAL OF HYGIENE, 1957, 65 (01): : 43 - 56
- [6] LEPTOSPIROSIS IN HUMANS IN THE UNITED-STATES, 1974-1978 JOURNAL OF INFECTIOUS DISEASES, 1979, 140 (06): : 1020 - 1022