Esslemont, R. J., Barbara R. Wassell, Linda M. Grimbleby, Tim R. Wassell, Jackie M. Lamb, and Shirley Horne. 1991. “The Application of Planned Animal Health and Production to Dairy Farms: DAISY - the Dairy Information System”. The Bovine Practitioner 1991 (26):38-41. https://doi.org/10.21423/bovine-vol1991no26p38-41.