by Monjazeb, A.M., Clay, C.E., High, K.P., Chilton, F.H.
Published in Prostaglandins, leukotrienes and essential fatty acids (01.01.2002)

by Clay, C.E, Board, R.G
Published in British poultry science (01.09.1992)

by Ashton, N, Barnett, K.C, Clay, C.E, Clegg, F.G
Published in Veterinary record (11.06.1977)