1. Passage of digesta through the intestines of sheep. Retention times in the small and large intestines;Coombe;British Journal of Nutrition,1965
2. Ecology and biological plasticity of sheep nematodes. IV. The biological significance of temperature × time hatching curves for eggs of sheep nematodes;Crofton;Corne It Veterinarian,1965
3. Ecology and biological plasticity of sheep nematodes.V. The relationship between egg volume and hatching time;Crofton;Cornell Veterinarian,1965
4. Ecology and biological plasticity of sheep nematodes. II. Genetic × environmental plasticity in Haemonchus contortus (Rud. 1803);Crofton;Cornell Veterinarian,1965