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- [4] ECONOMIC-ASPECTS OF ANIMAL DISEASES WITH SPECIAL REFERENCE TO PREVENTIVE VETERINARY MEASURES IN DAIRY FARMING ZUCHTUNGSKUNDE, 1985, 57 (04): : 225 - 236
- [6] ECONOMIC-ASPECTS OF VILLAGE HEALTH PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES, 1980, 209 (1174): : 71 - 82