References
- Johnston , R.H. , Donaldson-Wood , C. , Joo , H.O. and Allender , U. 1976 . Observations on the epidemiology of porcine parvovirus . Aust. vet. J. , 52 : 80 – 84 .
- Joo , H.O. , Donaldson-Wood , C. and Johnson , R.H. 1976 . A standardised haemagglutination inhibition test for porcine parvovirus antibody . Aust. vet. J. , 52 : 422 – 424 .