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  1. By: Balkwill, K - Nicholas, A
    Type: Article
    In: Bothalia
    Volume: 20
    Issue: 2
    Date: 1990-10-17
    Page Range: 207--207
    Publication Info: Pretoria Botanical Research Institute, Dept. of Agricultural Technical Services 1921-
  2. By: Nicholas, A
    Type: Article
    In: Bothalia
    Volume: 17
    Issue: 1
    Date: 1987-10-23
    Page Range: 29--32
    Publication Info: Pretoria Botanical Research Institute, Dept. of Agricultural Technical Services 1921-
  3. By: Nicholas, A - Goyder, D J
    Type: Article
    In: Bothalia
    Volume: 20
    Issue: 1
    Date: 1990-10-18
    Page Range: 87--90
    Publication Info: Pretoria Botanical Research Institute, Dept. of Agricultural Technical Services 1921-
  4. By: Pienaar, B J - Nicholas, A
    Type: Article
    In: Bothalia
    Volume: 18
    Issue: 2
    Date: 1988-10-23
    Page Range: 183--185
    Publication Info: Pretoria Botanical Research Institute, Dept. of Agricultural Technical Services 1921-
  5. By: Nicholas, A
    Type: Article
    In: Bothalia
    Volume: 17
    Issue: 1
    Date: 1987-10-23
    Page Range: 17--23
    Publication Info: Pretoria Botanical Research Institute, Dept. of Agricultural Technical Services 1921-