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Taylor & Francis Ltd‎(1989)‎

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By Tasker S.   Helps C.R.   Belford C.J.   Birtles R.J.   Day M.J.   Sparkes A.H.   Gruffydd-Jones T.J.   Harbour D.A.   in Veterinary Microbiology

ISSN:0378-1135|81|1|73-78

Elsevier‎(2001)‎

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