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  1. By: Wong, Yew Kwan
    Type: Article
    In: The Gardens' bulletin, Singapore
    Volume: 40
    Series: 4
    Date: 1987
    Page Range: 35--36
    Publication Info: Singapore, Govt. Print. Off. [etc.],
  2. By: Wong, Yew Kwan
    Type: Article
    In: The Gardens' bulletin, Singapore
    Volume: 40
    Series: 4
    Date: 1987
    Page Range: 45--76
    Publication Info: Singapore, Govt. Print. Off. [etc.],
  3. By: Wong, Yew Kwan
    Type: Article
    In: The Gardens' bulletin, Singapore
    Volume: 34
    Series: 4
    Date: 1981
    Page Range: 189--201
    Publication Info: Singapore, Govt. Print. Off. [etc.],
  4. By: Wong, Yew Kwan
    Type: Article
    In: The Gardens' bulletin, Singapore
    Volume: 39
    Series: 4
    Date: 1986
    Page Range: 203--214
    Publication Info: Singapore, Govt. Print. Off. [etc.],