Contribuicoes do setor agropecuario para a solucao da crise energetica [Residuo organico; Cana de acucar; Biomassa; Combustivel; Adubacao; Brasil] pt. 2
[Contribution of the farm sector for solution of the energy crises [Organic waste; Sugarcane; Biomass; Fuel Manuring; Brazil]] [pt. 2]