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Acacia mearnsii -- Diseases and pests -- South Africa (1) |
Black wattle (1) |
Canker (Plant disease) -- South Africa (1) |
Ceratocystis albifundus (1) |
Ophiostoma quercus (1) |
Plants -- Wounds and injuries -- South Africa (1) |
Wilt pathogen (1) |
Now showing items 1-7