by Johnson, R.H, Collings, D.F
Published in Research in veterinary science (01.11.1971)

by Bourne, F.J, Curtis, J, Johnson, R.H, Collings, D.F
Published in Research in veterinary science (01.03.1974)

by Collings, D F
Published in New Zealand veterinary journal (01.03.1984)

by Raju, N.R, Collings, D.F, Saville, P.H
Published in Australian veterinary journal (01.07.1988)

by Cawley G.D, Collings D.F, Dyson D.A
Published in Veterinary Record (1977)

by Collings D.F, Fitton J, Alexander D.J, Harkness J.W, Pattison M
Published in Research in Veterinary Science (1975)

by Roberts, T.A, Collings, D.F
Published in Avian diseases (01.07.1973)

by Collings, D F, Fitton, J, Alexander, D J, Harkness, J W, Pattison, M
Published in Research in veterinary science (01.09.1975)

by Gibbs, E.P.J, Collings, D.F
Published in Veterinary record (15.01.1972)

by Gibbs, E.P.J, Johnson, R.H, Collings, D.F
Published in Veterinary record (20.01.1973)

by Collings, D.F, Gibbs, E.P.J, Stafford, L.P
Published in Veterinary record (26.08.1972)