J. O'Brien

Infectious bursal disease of chickens and vaccination

J. O'Brien, 1976, Veterinary Record.

Formation of the Organization of Teratology Information Services (OTIS). The OTIS Executive Committee.

G. Koren, D. Quinn, B. Conover, 1991, Reproductive Toxicology.

Suspected adverse reactions to medicines during 1988

C. Evans, A. R. Kidd, J. O'Brien, 1989, Veterinary Record.