Leech, F. B. 1971. A critique of the methods and results of the British national surveys of disease in farm animals. I. Discussion of the surveys. British Veterinary journal. 127 (11), pp. 511-522. https://doi.org/10.1016/S0007-1935(17)37284-6
Leech, F. B. 1971. A critique of the methods and results of the British national surveys of disease in farm animals. II. Some general remarks on population surveys of farm animal disease. British Veterinary journal. 127 (12), pp. 587-592. https://doi.org/10.1016/S0007-1935(17)37236-6
Payne, J. M. and Leech, F. B. 1964. Factors affecting plasma calcium and inorganic phosphorus concentrations in the cow with particular reference to pregnancy, lactation and age. British Veterinary journal. 120, pp. 385-388.