by McOrist, Steven, Black, Douglas G, Pass, David A, Scott, Peter C, Marshall, John
Published in Journal of wildlife diseases (01.04.1984)

by Black, Douglas G.
Published in British medical journal (Clinical research ed.) (22.10.1983)

by Black, Douglas G
Published in British medical journal (Clinical research ed.) (22.10.1983)

by Black, D G, Swaffield, G E
Published in British Medical Journal (09.12.1978)