Harding, J. D.; Done, J. T.; Darbyshire, J. H. (1966-10-01). "Congenital tremors in piglets and their relation to swine fever". The Veterinary Record (engelsk). 79 (14): 388-390. doi:10.1136/vr.79.14.388. ISSN0042-4900. PMID6008428.
Harding, J. D.; Done, J. T.; Darbyshire, J. H. (1966-10-01). "Congenital tremors in piglets and their relation to swine fever". The Veterinary Record (engelsk). 79 (14): 388-390. doi:10.1136/vr.79.14.388. ISSN0042-4900. PMID6008428.
Harding, J. D.; Done, J. T.; Darbyshire, J. H. (1966-10-01). "Congenital tremors in piglets and their relation to swine fever". The Veterinary Record (engelsk). 79 (14): 388-390. doi:10.1136/vr.79.14.388. ISSN0042-4900. PMID6008428.