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  1. By: De Graff, Mark
    Type: Article
    In: The Western Australian Naturalist
    Volume: 10
    Issue: 5
    Date: 1967-05-16
    Page Range: 117--119
    Publication Info: Nedlands, W.A Western Australian Naturalists' Club 1947
  2. By: De Graff, Mark
    Type: Article
    In: The Western Australian Naturalist
    Volume: 11
    Issue: 4
    Date: 1969-09-15
    Page Range: 89--90
    Publication Info: Nedlands, W.A Western Australian Naturalists' Club 1947