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Malawi urban energy survey : the Energy Studies Unit, Ministry of Forestry and Natural Resources
(1984)
Nordisk biomassaforskning
Albrektson, Arne, (1980)
Fuelwood and rural energy production and supply in the humid tropics : a report for the United Nations University with special reference toTropical Africa and South-East Asia
Moss, Rowland P., (1981)