Tác giả: William C Ramsay

Bioenergy, a promising alternative for developing countries, is already a key resource (in the form of fuelwood, for example) in millions of households around the world. Third World planners are …

Bioenergy, a promising alternative for developing countries, is already a key resource (in the form of fuelwood, for example) in millions of households around the world. Third World planners are …