1. Genetical influence on leucocyte counts in the milk of cows;Afifi;Neth. Milk Dairy J.,1968a
2. The influence of mastitis, milk production and ease of milking on leucocyte counts in the milk;Afifi;Neth. Milk Dairy J.,1968b
3. The effects of certain aspects of farm management on leucocyte counts in milk;Afifi;Neth. Milk Dairy J.,1968c
4. The variation in the milk cell count of cow's milk troughout lactation and from one lactation to the next;Blackburn;J. Dairy Res.,1966