Não informado. (1938). Journal of the South African Forestry Association. South African Forestry Association.
Citace podle Chicago (17th ed.)Não informado. Journal of the South African Forestry Association. Pretoria, Africa do Sul: South African Forestry Association, 1938.
Citace podle MLA (8th ed.)Não informado. Journal of the South African Forestry Association. South African Forestry Association, 1938.
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