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- [22] PERSISTENCE OF S-TYPHIMURIUM IN A LARGE DAIRY-HERD EPIDEMIOLOGY AND INFECTION, 1989, 103 (02): : 235 - 241
- [24] DAIRY-HERD HEALTH MONITORING .2. A COMPUTER SPREADSHEET FOR DAIRY-HERD MONITORING COMPENDIUM ON CONTINUING EDUCATION FOR THE PRACTICING VETERINARIAN, 1988, 10 (01): : 75 - 80