O'Callaghan, W. P. (1931). Brucella infection - a serological study.
Lua i Stíl Chicago (17ú heag.)O'Callaghan, William Patrick. Brucella Infection - a Serological Study. 1931.
Lua MLA (9ú heag.)O'Callaghan, William Patrick. Brucella Infection - a Serological Study. 1931.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
