Não informado. (1971). South African journal of animal science. South African Society of Animal Production.
Citace podle Chicago (17th ed.)Não informado. South African Journal of Animal Science. Pretoria, Africa do Sul: South African Society of Animal Production, 1971.
Citace podle MLA (8th ed.)Não informado. South African Journal of Animal Science. South African Society of Animal Production, 1971.
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