Thirtle C, J Piesse, A Lusigi and K Suhariyanto (2003). “Multi-Factor Agricultural Productivity, Efficiency and Convergence in Botswana, 1981-1996.” J Development Economics 71(2): 605-624.

Thirtle C, J Piesse, A Lusigi and K Suhariyanto (2003). “Multi-Factor Agricultural Productivity, Efficiency and Convergence in Botswana, 1981-1996.” J Development Economics 71(2): 605-624.

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