Não informado. Report on the Animal Health Services in Great Britain. Ministry of Agriculture, Fisheries and Food.
Lua i Stíl Chicago (17ú heag.)Não informado. Report on the Animal Health Services in Great Britain. London: Ministry of Agriculture, Fisheries and Food.
Lua MLA (8ú heag.)Não informado. Report on the Animal Health Services in Great Britain. Ministry of Agriculture, Fisheries and Food.
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