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L' économie de l'île Maurice
Hein, Philippe, (1997)
Cattle, diamonds and institutions : main drivers of Botswana's economic development, 1850 to present
Hillbom, Ellen, (2014)
The economies of the Middle East
Wilson, Rodney, (1979)
A summary of various methods for the utilization of sea waves energy
Paturau, J. M., (19XX)