• Imperial Institute Archive. No.28: Union of South Africa - Citrus Industry 

  The Imperial Institute (6 August 2009)

• Imperial Institute Archive. No 26: India - Coir fibre 

  The Imperial Institute (6 August 2009)

• Imperial Institute Archive. No.25: Ceylon - Coconut Industry 

  The Imperial Institute (6 August 2009)

• Imperial Institute Archive. No.23: The Gold Coast 

  The Imperial Institute (6 August 2009)

• Imperial Institute Archive. No.21: India - Cotton 

  The Imperial Institute (6 August 2009)

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