Boesewinkel, H.J. 1976: Powdery mildew of Begonia in New Zealand. Transactions of the British Mycological Society 67(1): 152-155.
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| Boesewinkel, H.J. 1976: Powdery mildew of Begonia in New Zealand. Transactions of the British Mycological Society 67(1): 152-155. |