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New page: {{citation |last = Tizard |first = I |year = 2004 |title = Veterinary Immunology: An Introduction |ed = 7th ed. |city = Philadelphia |pub = Saunders }}
{{citation
|last = Tizard
|first = I
|year = 2004
|title = Veterinary Immunology: An Introduction
|ed = 7th ed.
|city = Philadelphia
|pub = Saunders
}}