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  1. By: Van Staden, Johannes - Bornman, Chris H
    Type: Article
    In: Journal of South African botany
    Volume: 36
    Issue: 3
    Date: 1970
    Page Range: 207--214
    Publication Info: Kirstenbosch National Botanic Gardens of South Africa
  2. By: Van Staden, Johannes - Bornman, Chris H
    Type: Article
    In: Journal of South African botany
    Volume: 36
    Issue: 1
    Date: 1970
    Page Range: 9--12
    Publication Info: Kirstenbosch National Botanic Gardens of South Africa